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A supplier portal for SAP B1 — vendors never need a B1 license.
A supplier portal for SAP Business One — vendors onboard, respond to RFQs/RFPs, and upload invoices from a white-label web app. Syncs via Service Layer. No B1 licenses for vendors.
- 9 ERP integrations
- Multi-country
- EN / ES / PT support
- 2-3 week deployment
70%
less procurement time
8-15%
average savings per PO
2-3 weeks
to go live
The problem
SAP Business One has no first-party external vendor portal. The architecture assumes users are internal — procurement, sales, finance — and every interactive user needs a B1 license. For years the workaround has been: either give your suppliers B1 Limited User access (expensive, exposes internal UI, requires training them on SAP), hack together a web front-end using B1 Integration Framework (B1if) and the Service Layer (custom development, years of maintenance), or keep everything in email (unscalable past a handful of vendors). Meanwhile your vendor base keeps asking the same questions: when is the invoice paid, when does the PO ship, what documents do I need to update?
The solution
Sourced is a white-label web portal your suppliers log into — nothing about it touches SAP Business One at the UI layer. Behind the scenes, Sourced syncs supplier-provided data (onboarding forms, invoices, compliance documents, ASNs) to your SAP B1 through the Service Layer REST API. Suppliers see your brand, complete self-onboarding, upload invoices that Sourced OCRs and 3-way-matches, and check real-time PO status. Your SAP B1 stays as your system of record, and no vendor ever needs a B1 user license.
Vendors use your branded portal — no SAP B1 user licenses required for external access
All sync via SAP B1 Service Layer REST API — no custom B1if development, no SAP Partner project
Suppliers self-onboard, upload invoices, and self-serve status — 50-70% drop in inbound vendor inquiries
How the portal works with SAP Business One.
Supplier invited to the portal
Your procurement team sends the invite from Sourced. The supplier creates credentials on your white-label portal. No touchpoint with SAP B1 at any point.
Guided self-onboarding
Company details, tax IDs, banking data, compliance certifications, and mandatory documents — all entered through validated forms. Completed profiles create or update the Business Partner record in SAP B1 via Service Layer.
Live PO and payment status
Suppliers see each Purchase Order, its status, and the linked AP Invoice payment state — all pulled in real time from SAP B1 via Service Layer. Nothing in the portal is stale or cached beyond seconds.
Respond to RFQs and RFPs without touching SAP B1
Suppliers receive RFQ and RFP invitations in the portal, submit structured quotes with line-item pricing and lead times, attach technical documents, and revise bids — all without a SAP B1 login. Awarded quotes flow into Purchase Orders in SAP B1 via the Service Layer REST API.
Two-way messaging per transaction
Every Purchase Order and RFQ has a structured communication thread in the portal. Buyers and suppliers exchange clarifications, revised documents, and delivery change notes in context — none of this lives inside SAP B1, and nothing requires B1 user licenses for the vendors involved.
Invoice upload with OCR matching
Suppliers upload the invoice document. Sourced OCRs the content, extracts line items, matches against the Purchase Order and Goods Receipt PO records in your SAP B1, and creates the AP Invoice record when matching clears. Discrepancies route to your AP team for exception handling.
Advance shipment notice
Suppliers send the ASN through the portal with carrier, tracking, and expected arrival. Your warehouse confirms receipt in Sourced when the goods land; the Goods Receipt PO is recorded in SAP B1 automatically.
Options for a SAP B1 supplier portal.
| Capability | Sourced portal | SAP B1 Limited User for vendors | Custom B1if / web portal build |
|---|---|---|---|
| Licenses required for vendors | None | B1 Limited or Pro | |
| White-label (your brand, not SAP) | |||
| Self-onboarding flow | |||
| Invoice upload with OCR + 3-way match | |||
| Scorecards and supplier KPIs | |||
| Mobile-first UX | Limited | ||
| Vendors see SAP screens | |||
| Time to stand up | 2-3 weeks | N/A | |
| Vendor training required | Minimal | SAP training | |
| Respond to RFQs and RFPs from the portal (no B1 license) | Yes (with license) | ||
| Messaging thread per PO / RFQ / RFP |
Why SAP B1 manufacturers pick Sourced for their supplier portal.
Zero SAP B1 licenses for vendors
Sourced runs entirely outside your SAP B1. Vendors log into your white-label portal, never your SAP. That avoids the licensing cost and compliance overhead of provisioning external users inside SAP B1.
Service Layer REST — the modern SAP B1 integration path
Service Layer is SAP B1's REST API, introduced to replace the legacy DI API. Sourced syncs through Service Layer, so there's no DI API complexity, no C# middleware to maintain, and no SAP Partner consulting engagement needed to get started.
No B1if custom development
SAP B1 Integration Framework can be used to build a web-facing portal — at the cost of custom XML flows, on-premise server maintenance, and ongoing operational complexity. Sourced gives you the same outcome as a pre-built SaaS product. No B1if, no XML flows to debug, no SAP infrastructure to babysit.
Invoice OCR with 3-way match against SAP B1
Uploaded vendor invoices get OCR-ed by Sourced, line items extracted, matched against the Purchase Order and Goods Receipt PO records in SAP B1 via Service Layer. Clean matches create the AP Invoice in B1; mismatches hold in the Sourced exceptions queue for AP review. No manual keying of vendor bills in SAP B1.
Runs alongside Boyum, Produmex, and other add-ons
If your SAP B1 already has Boyum (B1 Usability Package) or Produmex (warehouse / manufacturing), Sourced coexists. Our sync is data-layer via Service Layer, not UI-layer — no conflict with your existing add-on stack.
Manufacturing-first vendor workflows
SAP B1's base in mid-market manufacturing shapes the portal design. Technical spec document exchange, qualification document management, lot-level compliance tracking — the flows vendors need in manufacturing supply chains are built in.
RFQ participation without SAP B1 access
Suppliers receive RFQs, submit quotes, and negotiate — all from the portal. No SAP B1 user licensing cost to give vendors access, no SAP training required for them. Quote data flows to Sourced's comparison engine and the awarded PO lands in your SAP B1 via Service Layer.
Structured communications per PO and RFQ
Instead of procurement conversations scattered across individual Outlook inboxes, each PO and RFQ has its own message thread in the portal. Your team and the supplier communicate inside the transaction — auditable and preserved.
Frequently asked questions.
Can we use the portal without giving vendors SAP B1 licenses?
Yes — that's the whole point. Sourced is external to SAP B1. Vendors log into your Sourced portal with Sourced credentials, not SAP B1 credentials. No B1 Limited User or Professional User license is needed for any supplier, regardless of how many vendors use the portal.
How does this work with SAP B1's Service Layer?
Sourced connects to your SAP B1 Service Layer (the REST API introduced with SAP B1 9.2) using standard credentials assigned to a dedicated Sourced service user. All sync — Business Partner create/update, AP Invoice create, Goods Receipt PO create — flows through Service Layer. No custom add-on is installed in SAP B1.
What if we're on an older SAP B1 version with only DI API?
Service Layer has been available since SAP B1 9.2 (released 2016). For any supported on-premise version pre-9.2, DI API integration is possible but adds setup complexity. Most of our deployments are on supported versions using Service Layer.
Does this work with SAP B1 Cloud?
Yes. SAP B1 Cloud exposes Service Layer the same way the on-premise version does. Sourced connects through your cloud instance's Service Layer endpoint with no additional infrastructure required.
Can vendors upload invoices for AP Invoice posting in B1?
Yes. The supplier uploads the invoice (PDF or XML) in the portal. Sourced runs OCR, extracts line items, matches against the Purchase Order and Goods Receipt PO in SAP B1, and creates the AP Invoice record when matching clears. Exceptions queue for your AP team. No manual keying on your side.
How does multi-company SAP B1 (company database per legal entity) work?
Each SAP B1 company database connects separately to Sourced. A single Sourced portal can front multiple company databases with per-supplier scoping, or you can deploy separate portal instances per company — your choice based on how you want to segment supplier access.
What if we migrate to S/4HANA later?
Sourced's integration extends to S/4HANA through SAP's standard OData APIs. Your portal configuration, supplier onboarding data, and historical scorecards migrate with you. Your suppliers don't need to re-register — they continue on the same portal, and only the backend connection changes.
How long does implementation take?
Two to three weeks for a complete SAP B1 supplier portal deployment including Service Layer setup in sandbox and production, portal branding, onboarding workflow configuration, and initial supplier invites.
Can suppliers respond to our RFQs through the portal?
Yes. The portal is the supplier's workspace for everything — onboarding, PO status, invoice upload, and RFQ responses. Vendors receive active RFQs in the portal, submit structured quotes with line-item detail, and maintain conversation threads per RFQ. Awarded quotes become Purchase Orders in SAP B1 through the Service Layer, and none of it requires giving the supplier a SAP B1 user license.
Can suppliers respond to both RFQs and RFPs from the portal?
Yes. The portal distinguishes between RFQs (pricing-first, line-item focused) and RFPs (solution-first, document-driven with structured proposal sections). RFQs show line items with price and lead time inputs; RFPs expose the multi-section proposal form you configured, allowing suppliers to describe their approach, attach technical documentation, propose commercial terms, and submit through structured forms. Both flows normalize into Sourced's comparison engine for your evaluation.
See the portal running on SAP Business One
Book a 30-minute demo. We'll connect to a sandbox SAP B1 via Service Layer, onboard a test supplier, upload an invoice, and show the AP Invoice flowing back into B1.