Solar workflow depth
Can the product carry system details, proposal status, project milestones, and the delivery handoff without rebuilding the process in custom fields?
Quickest Solar CRM is our first pick for a small Indonesian installer or EPC sales desk whose immediate problem is slow quoting and follow up that nobody owns. That placement uses a disclosed proposal-first adoption lens and still requires an Indonesia proof step. OpenSolar is the clearest free design-first option, Pylon pairs design with an optional CRM, and Sunbase publishes wider solar operations. We compared seven tools against IDR documents, electronic tax invoicing, PLN rooftop rules and quota arrangements, industrial procurement and multi-island delivery. This page is written for English-speaking commercial and industrial buyers rather than the mass Indonesian residential market.
Direct answer
Choose Quickest when proposal speed, lead ownership, field adoption and a free pilot are the first priorities. QuickEstimate owns Quickest and its published evidence is India-first, so Indonesian currency, electronic tax invoicing, PLN rooftop fields, Bahasa Indonesia output, hosting and support all remain unverified until a demo proves them. OpenSolar is better when free solar design leads the purchase. Because rooftop rules and quota arrangements have changed more than once, the decisive capability is storing which regulatory version a proposal relied on and identifying affected customers when it changes.
7 jobs, 7 picks
A useful shortlist starts with the sales or delivery bottleneck. Each winner below reflects a different buying priority, while the overall ranking rewards a CRM that a solar sales team can adopt quickly.
Small mobile sales teams
Free: 1 user and 10 proposals monthly. Pro: INR 6,999 per user yearly, minimum 3 users. 02Best free design-first optionOpenSolarStartups combining solar design, proposals and project CRM
OpenSolar says partners fund the model; review services and connected costs. 03Best compact design and CRM trialPylonTeams wanting solar and battery proposals with optional CRM
New users receive five Standard Project credits; confirm Indonesia commercial terms. 04Best broad solar operations candidateSunbaseEstablished teams evaluating a wider solar sales and project platform
Request Indonesia users, modules, implementation, integrations, support and renewal pricing. 05Best configurable general CRMZoho CRMTeams with an administrator and several sales or service lines
The reviewed global page publishes USD prices and adds local taxes. 06Best configurable operations suiteOdooBusinesses joining CRM with sales, inventory, field service and accounting
Confirm current plan, apps, users, hosting, implementation, localisation and customisation. 07Best for marketing-led acquisitionHubSpot CRMTeams prioritising forms, email, meetings and pipeline
Official page states up to 2 free users and 1,000 contacts; price all required hubs.How we evaluated
We saved English and Bahasa Indonesia search attempts across Google, Bing, DuckDuckGo, Brave and Mojeek, then traced one record from an enquiry or tender through site visit, load assessment, quotation, deposit, design, licensed electrical work, the PLN rooftop application, procurement, inter-island freight, installation, commissioning, electronic tax invoicing, handover and service. Ranking rewards focused sales adoption first, then solar design, operational breadth, field usability, finance fit and configurable CRM depth. Indonesia facts come from PLN, the Ministry of Energy and Mineral Resources and the Directorate General of Taxes. Product descriptions come from official vendor pages and remain vendor claims.
Can the product carry system details, proposal status, project milestones, and the delivery handoff without rebuilding the process in custom fields?
Can managers route leads, track activity, automate follow-up, forecast revenue, and see why an opportunity stalled?
Can a rep move from site information to a credible customer proposal, and how much specialist solar design happens inside the platform?
Does the workflow support the language, currency, tax, communications, documents, and handoffs common in Indonesia?
What setup, migration, training, administration, and extra software does the apparent subscription require?
At-a-glance matrix
The table separates CRM depth from proposal, design, and operations coverage. Confirm plan limits and country availability in writing before signing.
Local billing check: confirm IDR pricing, tax treatment, contract currency, and payment fees in writing.
| Platform | Best for | Public price | Solar proposals | Design | Project operations | CRM depth | Free access |
|---|---|---|---|---|---|---|---|
| 1Quickest Solar CRM | Small mobile sales teams | Free plan; Pro in INR | Focused branded proposals | Indonesia inputs unverified | Lead stages and follow up | Focused solar sales CRM | 1 user, 10 proposals monthly |
| 2OpenSolar | Startups combining solar design, proposals and project CRM | Free core platform | Interactive and PDF proposals | Native solar and storage design | Project CRM, tasks, schedules and files | Solar project CRM | Core platform described as free |
| 3Pylon | Teams wanting solar and battery proposals with optional CRM | Dollar pricing shown; confirm currency | Web and PDF proposals | Solar and battery design | Optional solar CRM and integrations | Solar CRM available | Five Standard Project credits |
| 4Sunbase | Established teams evaluating a wider solar sales and project platform | Quote required | Solar proposal capabilities published | Connect or verify design scope | Sales and operational solar workflows | Broad solar CRM | Request demo and trial terms |
| 5Zoho CRM | Teams with an administrator and several sales or service lines | Free for 3 users; paid USD tiers | Configure CPQ or connect a proposal tool | Specialist solar tool required | Custom modules, workflow, reports, portals and APIs | Broad general CRM | Free edition for 3 users |
| 6Odoo | Businesses joining CRM with sales, inventory, field service and accounting | One app free; paid plans published | Sales quotations and signatures | Specialist solar design required | CRM, sales, inventory, accounting, field service and more | General CRM within modular ERP | One app free plan stated |
| 7HubSpot CRM | Teams prioritising forms, email, meetings and pipeline | Free CRM; paid hubs available | Connect or configure proposal software | Specialist solar tool required | Paid sales and service expansion | Broad customer platform | Up to 2 users and 1,000 contacts |
Pricing and capability labels were checked against official sources on Sep 7, 2026. Currency conversion is intentionally omitted where a vendor does not publish a local price.
Country research
Indonesia is by far the largest market on this list, and it combines three demands that stress a CRM in different directions. Rooftop regulation has been revised more than once, so a proposal written under one framework may not describe what a customer can do under the next. Tax invoicing runs through an electronic system that has to reconcile with accounting rather than with a branded PDF. And delivery spans an archipelago where a Java rooftop and a Sulawesi factory are operationally different jobs. Getting the regulatory version and the fiscal invoice right matters more than proposal speed.
PLN is the state electricity company and the counterparty for supply, rooftop applications, metering and any export arrangement. Store the customer account, the tariff category taken from the actual bill, the region and unit, the meter type, the supply phase, the requested capacity, the application route, the reference, the technical review outcome, the fees, the inspection, the meter change and the activation evidence rather than a single stage name.
PT PLN (Persero): PLN ↗The Ministry of Energy and Mineral Resources issues the regulations that govern rooftop solar, and those rules have been revised more than once in recent years. Store which regulation version and effective date a proposal relied on, the capacity limit applied, the export treatment described, any quota position and the person who confirmed it. That stored reference is what lets a company identify affected customers when the framework changes.
Ministry of Energy and Mineral Resources: Ministry of Energy and Mineral Resources ↗The Directorate General of Taxes operates electronic tax invoicing for registered taxable businesses. A branded PDF from a proposal tool is not a fiscal invoice. Test taxpayer and customer identifiers, item mapping, value added tax calculation, invoice numbering, credit notes, transmission status, duplicate prevention, downtime recovery, accounting reconciliation, permissions, retention and export before month end depends on it.
Directorate General of Taxes Indonesia: Directorate General of Taxes ↗Because rooftop capacity and export terms have been subject to quota and policy change, a proposal is a time-stamped statement rather than a permanent one. Store the validity period, the regulatory version relied on and the customer acknowledgement, and test identifying every open proposal written under a superseded rule. Reissuing quietly under new terms without telling the customer is how a company loses a reference.
Ministry of Energy and Mineral Resources: Ministry of Energy and Mineral Resources ↗Industrial and commercial buyers dominate the segment this page addresses and move through formal procurement. Store the tender reference, the issuing organisation, the closing date, insurance and certification requirements, health and safety documentation, the technical and pricing schedules, clarifications, the submission receipt, the outcome, the contract, the agreed service level and permitted shutdown windows.
PT PLN (Persero): PLN ↗Multi-island delivery makes freight and crew logistics a real cost line. Store the destination island and province, the freight route, the vessel or flight schedule, the consignment cut-off, the handling agent, the expected arrival, the crew travel plan and any anticipated second shipment, then derive the customer commitment date from those fields rather than an office estimate.
Ministry of Energy and Mineral Resources: Ministry of Energy and Mineral Resources ↗Industrial sites impose access and safety controls that shape scheduling. Record induction requirements and expiry, the safety file, permits to work, escort arrangements, the contact chain, planned shutdown windows, the service interval and the escalation path. A crew turned away at a plant gate because an induction lapsed loses a day plus the travel that got them there.
PT PLN (Persero): PLN ↗Bahasa Indonesia is the working language for most customer documentation even where a project team operates in English. Generate the documents that carry obligations in the language the buyer reads, have a fluent reviewer approve the wording, and store the approved version, the sender, the timestamp, the purpose and the delivery status.
Directorate General of Taxes Indonesia: Directorate General of Taxes ↗Currency movement and imported equipment make quotation validity a live commercial issue on a scale the smaller markets on this list do not face. Store the cost basis, the exchange assumption, the freight assumption, the validity period, the ordered stock and the clearance position, and prevent acceptance at a stale price without approval on a contract that took a quarter to close.
Directorate General of Taxes Indonesia: Directorate General of Taxes ↗Full reviews
Each review explains the useful workflow, the buyer who should shortlist it, and the country-specific question that a sales demo must answer.
Quickest is first for a narrow mobile sales adoption goal, and it will be outgrown quickly by a serious Indonesian EPC.
Quickest centres the work a small team usually has to fix first: capture the enquiry, assign an owner, produce a branded proposal quickly and make the next follow up visible. A limited free plan allows an adoption pilot before a larger migration. QuickEstimate owns Quickest and publishes this ranking, so the position depends on the disclosed method rather than on independent market recognition.
No public evidence verifies IDR quoting with validity, electronic tax invoicing, PLN application tracking, regulatory version fields, Bahasa Indonesia output or multi-island logistics. Be realistic about headroom: Indonesia is the largest market covered on this site, and a proposal-first tool that suits a three-person desk will not carry an EPC with several provinces, a fiscal invoicing obligation and a moving regulatory framework.
Choose it if: a small desk needs quoting speed and expects to stay small. Choose another platform if: fiscal invoicing, regulatory change and multi-province delivery are already part of the work.
OpenSolar is the strongest free design-first route for Indonesia, and commercial array handling is what to examine.
OpenSolar publishes design, proposals, table and Kanban project views, custom workflows, actions, schedules, documents, roles, permissions and an API. Because the segment this page addresses is commercial and industrial, judge it on how it handles large arrays, demand profiles and multi-building sites rather than on a residential roof render.
Validate Indonesian imagery, irradiance, humidity and heat derating, commercial load profiles, equipment libraries, IDR display, PLN stages, field connectivity and document output including Bahasa Indonesia. Change a design after acceptance and trace price, stock, tax, payment, technical evidence and handover. Review privacy terms, transfers, support coverage and a complete account export.
Choose it if: design leads the purchase and a free core product is attractive. Choose another platform if: fiscal invoicing, procurement and regulatory tracking dominate the requirement list.
Pylon supports a compact design and CRM evaluation, with Indonesian fiscal and regulatory fit still unverified.
Pylon documents solar and battery design, web and PDF proposals, design history, integrations and a solar CRM add-on. It says new users receive credits for five Standard Projects and teams can add unlimited users. That supports a practical test involving sales, design and management before the buyer assumes it will replace a spreadsheet and a chat group.
Confirm the dollar currency, project rules, CRM cost, payment fees, taxes and renewal. Test Indonesian locations, humidity, commercial load profiles, IDR display, roles and support. Review data processing and export, and model several revisions on one factory rooftop because an industrial technical committee typically generates two rounds of changes before an award.
Choose it if: the team wants to trial solar design, proposals and CRM together. Choose another platform if: fiscal invoicing, procurement and stock dominate the requirement list.
Sunbase publishes broad solar CRM scope, and procurement plus multi-province scheduling is what to test.
Sunbase positions its CRM around solar lead management, sales, communication, proposals, workflow and operational visibility. For an Indonesian EPC selling factory rooftops across provinces, the operational half is where the value sits: assembling a compliant bid, keeping inductions current, scheduling across islands and tracking stock that left the warehouse.
Ask for comparable customer references and use a controlled demo from tender notice through survey, bid, award, deposit, electronic tax invoice, procurement, freight, installation, commissioning and service. Verify IDR handling, document and induction expiry alerts, multi-province scheduling, stock, offline behaviour, roles, audit history, privacy terms, support hours and data export.
Choose it if: an EPC sells industrial systems across provinces. Choose another platform if: a free design tool or a simpler proposal CRM meets the immediate need.
Zoho suits an Indonesian EPC that needs regulatory versions, tenders and inductions enforced by workflow rules.
Zoho CRM offers configurable modules, fields, pipelines, workflow, reports, mobile apps, portals and APIs. Custom objects and workflow rules are the reason to consider it here: a regulation version with an effective date, a tender with expiry alerts, a PLN application with its own status and an induction register that blocks dispatch can all be enforced rather than remembered.
Build or connect load assessment, solar design, IDR quotations with validity, electronic tax invoicing, payment reconciliation, stock across provinces, PLN stages, regulatory versions, induction records, commissioning, assets, warranty and handover. Test processor terms, transfers, retention, API limits, support, a complete export and the administrator effort required after launch.
Choose it if: the company has an administrator and faces a moving regulatory framework. Choose another platform if: the team expects ready-made Indonesian workflows with little configuration.
Odoo suits an Indonesian EPC whose fiscal invoicing, stock and project accounting have outgrown a sales tool.
Odoo combines CRM with quotations, sales, accounting, purchasing, inventory, projects, field service, helpdesk and other applications, including project accounting for staged contracts, multi-warehouse stock and localisation work that commonly covers Indonesian fiscal invoicing through implementation partners.
Verify a current Indonesian localisation and the electronic tax invoicing route with the responsible implementation partner. Test IDR, value added tax, retention on staged contracts, landed cost with freight, stock across provinces, serial numbers, field service with permits, approvals, PLN evidence, warranty and migration. Connect a specialist design tool and review hosting, backups, upgrades, exit and a restorable export.
Choose it if: fiscal invoicing, stock, project accounting and CRM should share one suite. Choose another platform if: the business wants a solar-specific proposal product with minimal implementation.
HubSpot handles long industrial sales cycles well and leaves fiscal invoicing and regulation outside.
HubSpot's free CRM covers contacts, lead management, forms, email, meetings and pipeline for a small user group. Long industrial sales cycles with several stakeholders are genuinely well served by sequences, meeting scheduling, document tracking and deal collaboration, which is the part of an Indonesian EPC business it fits.
Price and test the complete stack: messaging, solar design, IDR quotation with validity, electronic tax invoicing, payment reconciliation, stock, freight scheduling, field delivery with permits, procurement documents, regulatory version tracking and service reporting. Use controlled fields for the province, the PLN reference, the regulation version and the induction expiry.
Choose it if: long industrial sales cycles are the priority and integrations can be governed. Choose another platform if: fiscal invoicing, regulatory change and field scheduling are the real problems.
Buyer guide
Choose by the most expensive broken handoff, then test that handoff using real opportunities, real users, and the documents your customers actually receive.
Start with Quickest when slow quoting and unowned follow up are the visible failures on smaller commercial work. Use the free plan on real Indonesian opportunities. Continue only if the vendor proves IDR quoting with validity, electronic tax invoicing handoff, PLN application tracking, regulatory version fields, privacy, support and export.
OpenSolar fits a team that needs solar design, proposals and project CRM before it can fund a wider stack. Validate Indonesian imagery, irradiance inputs, humidity and heat derating, commercial and industrial load profiles, IDR display, PLN stages, data terms, mobile performance and support coverage.
Pylon is worth testing when web and PDF proposals, solar and battery design and an optional solar CRM all appeal. Confirm the displayed currency, Indonesian model inputs, large commercial array handling, revision economics, mobile use, permissions, support hours and the evidence produced at handover for an industrial customer.
Sunbase targets broader solar sales and operational workflows, which suits an EPC selling factory rooftops and industrial systems across provinces. Ask for comparable references and test procurement tracking, induction and insurance expiry alerts, multi-island scheduling, stock, offline behaviour, privacy, commissioning and export.
A configurable platform can model regulatory versions, PLN applications, tenders, induction registers, multi-island stock and electronic tax invoicing together. Odoo is stronger where landed cost, inventory, project accounting and fiscal integration dominate; Zoho is the more familiar CRM route with strong custom objects and workflow gating.
HubSpot fits a business whose first priority is forms, campaigns, email, meetings and pipeline visibility, and it suits long industrial cycles with several stakeholders. Budget the solar design, quotation, tax, PLN application, procurement, project and reporting tools around it and test total cost as contacts grow.
Run the same three opportunities in every shortlisted CRM: one ordinary lead, one revision-heavy project, and one deal that already failed. This removes demo theatre and exposes repeated entry, stale documents, weak mobile adoption, and missing local support.
Capture a real lead, assign it, create the proposal, schedule follow-up, record acceptance, and hand it to delivery.
Change the system, equipment, price, payment route, and installation date. Identify every stale record.
Use a duplicate, missed follow-up, rejected proposal, or delayed job and ask the CRM to show what happens next.
Produce a taxable sale with separate lines for imported equipment, freight, structural work and services, plus a deposit, a staged invoice, retention on larger contracts, a variation, a credit note, a refund and a warranty replacement in IDR. Store a validity period, the cost basis and the exchange assumption, and block acceptance at a stale price without approval.
Follow an accepted quotation into the real electronic tax invoicing route. Verify taxpayer and customer identifiers, item mapping, value added tax calculation, invoice numbering, credit notes, transmission status, duplicate prevention, downtime recovery, stock effects, journal entries and audit export. Ask which system is authoritative and who fixes errors.
Store which rooftop regulation version and effective date each proposal relied on, the capacity limit applied, the export treatment described, any quota position and the person who confirmed it. Test identifying every open proposal written under a superseded rule, because that report is what prevents a company from honouring terms it can no longer deliver.
Treat the rooftop application as its own record with a reference, an owner, a submission date, a document set and a dated outcome. Capture the technical review result, queries returned, the resubmission, the approved capacity, fees paid, the inspection, the meter change and the first export reading, and drive customer updates from those milestones.
Store the tender reference, the issuing organisation, the closing date, insurance and certification requirements, health and safety documentation, the technical and pricing schedules, clarifications, the submission receipt, the outcome, the contract, the agreed service level and permitted shutdown windows. Set alerts against document and insurance expiry.
Store the destination island and province, the freight route, the vessel or flight schedule, the consignment cut-off, the handling agent, the expected arrival, the crew travel plan and any anticipated second shipment, and derive the commitment date from those fields. Test a missed sailing and confirm the schedule, notification and revised date follow.
Record induction requirements and expiry, the safety file, permits to work, escort arrangements, the contact chain, shutdown windows and the escalation path. Test a crew dispatched with a lapsed induction and confirm the system blocks it rather than discovering the problem at the plant gate after a flight.
Generate the quotation, the acceptance, payment requests, warranty terms and handover instructions in the language the buyer reads. Have a fluent reviewer approve the Bahasa Indonesia wording, store the approved version, the sender, the timestamp, the purpose and the delivery status, and test the generated PDF rather than only a browser preview.
Export the accepted scope, variations, the as-built design, installed equipment and serial numbers, photographs, test results, commissioning, PLN and regulatory evidence, invoices and payment status with fiscal references, warranties, manuals, monitoring access, training, signatures, open defects and the service contact. For industrial customers add the compliance pack and service level.
The real budget
Indonesian pricing has to account for scale as well as rate: a growing EPC will add seats, projects and integrations faster than a small island installer. Quickest publishes INR terms, OpenSolar describes its core platform as free, Pylon shows dollar prices whose billing currency should be confirmed, and Zoho publishes USD global tiers. Sunbase needs a quote for the relevant scope. Odoo and HubSpot vary by apps, seats, contacts and implementation. Ask for billing currency, taxes, payment method, bank charges, users, projects, storage, integrations, API limits, messaging, onboarding, support hours, renewal, exit and every product needed to reach a compliant electronic tax invoice and a completed industrial installation.
Free: 1 user and 10 proposals monthly. Pro: INR 6,999 per user yearly, minimum 3 users.
OpenSolar says partners fund the model; review services and connected costs.
New users receive five Standard Project credits; confirm Indonesia commercial terms.
Request Indonesia users, modules, implementation, integrations, support and renewal pricing.
Quickest lists one free user with ten proposals monthly and Pro at INR 6,999 per user yearly with a three-user minimum. Indonesian commercial and tax terms are unverified.
OpenSolar states that its core platform is free because partners fund the model. Review partner choices, paid services, data use, support coverage and connected system costs.
Pylon offers five Standard Project credits to new users and states unlimited team users. Confirm the displayed currency, the CRM add-on, payment fees, project rules and renewal.
Zoho's reviewed page offers three free users alongside paid USD tiers. HubSpot states up to two free users and 1,000 contacts. Neither free plan supplies a complete Indonesian solar operating stack.
Budget electronic tax invoicing integration, accounting, payment handling, messaging, design software, implementation, field devices, storage, support and administration alongside the licence fee.
Compare the cost of one complete acceptance case rather than a feature checklist, and price one regulatory change alongside it. A company that cannot identify every open proposal written under a superseded rooftop rule will either honour terms it cannot deliver or renege on customers in writing, and both are expensive.
Ask what happens when an electronic invoice transmission fails at month end or a crew is dispatched to another island with a lapsed induction. The commercial proposal should identify queued transactions, alerting, retry limits, manual reconciliation, data ownership and support escalation.
Our number-one pick
Quickest concentrates on lead ownership, a mobile proposal and the next follow up, which is a practical first adoption target for a small Indonesian sales desk.
Its free plan lets one person test ten monthly proposals before the company commits to migration, custom integration or additional seats.
First place stays conditional on proof. IDR handling with validity, electronic tax invoicing, PLN application tracking, regulatory version fields, Bahasa Indonesia output and multi-island logistics are not verified for Indonesia.
Your next move
Start with Quickest and the specialist closest to your largest local requirement. Use the same evidence and test deals for both.
Name the bottleneck. Pick lead response, proposal speed, design, payment, install handoff, or management visibility.
Choose two tools. Compare Quickest with the strongest specialist for that bottleneck.
Run the Three-Deal Proof. Score adoption, repeated entry, revision handling, support, and full annual cost.
Research record
These sources support the market, regulatory, product, and pricing statements on this page. Product terms can change after the checked date.
Common questions
Quickest is first under our proposal-first adoption lens for a small sales desk, but QuickEstimate owns it and Indonesian localisation is unverified. OpenSolar is the better free design-first option. For a commercial or industrial EPC at any scale, a configurable platform that handles electronic tax invoicing and regulatory version tracking will serve you better.
English-speaking commercial and industrial buyers and the teams that sell to them, rather than the mass Indonesian residential market. Indonesia is large and diverse enough that a single page cannot serve both, and the requirements below reflect factory rooftops, industrial sites and institutional procurement rather than household sales.
Because rooftop rules have been revised more than once, so a proposal written under one framework may not describe what a customer can do under the next. Store the regulation version and effective date each proposal relied on, the capacity limit, the export treatment and any quota position, and test identifying every open proposal written under a superseded rule.
We found no verified public evidence for native IDR proposals or an electronic tax invoicing handoff. Quickest's published evidence is India-first. Require a live taxable quotation, a deposit, a staged invoice with retention, a credit note, a refund, an electronic invoice transmission, a failed transmission and a reconciliation during the demo.
As its own record with a reference, an owner, a submission date, a document set and a dated outcome, plus the technical review result, queries returned, the resubmission, the approved capacity, fees paid, the inspection, the meter change and the first export reading. Drive customer updates from those milestones rather than an internal sales stage.
Store the destination island and province, the freight route, the vessel or flight schedule, the consignment cut-off, the handling agent, the expected arrival, the crew travel plan and any anticipated second shipment, and derive the commitment date from those fields. A Java rooftop and a Sulawesi factory are operationally different jobs.
Induction requirements and expiry, the safety file, permits to work, escort arrangements, the contact chain, shutdown windows and the escalation path. Test dispatching a crew with a lapsed induction and confirm the system blocks it, because discovering the problem at the plant gate after a flight is the expensive version.
For documents that carry obligations, yes: the quotation, the acceptance, payment requests, warranty terms and handover instructions. Have a fluent reviewer approve the wording, store the approved version and test the generated PDF rather than only a browser preview, even where the project team works in English.
Include the accepted scope, variations, the as-built design, installed equipment and serial numbers, photographs, test results, commissioning, PLN and regulatory evidence, invoices and payment status with fiscal references, warranties, manuals, monitoring access, training, signatures, open defects and the service contact. For industrial customers add the compliance pack.
Use the Three-Deal Proof and require every vendor to show the same lead, revision, document, and failed handoff.