SAP ECC
SAP ECC (SAP ERP Central Component) is the on-premises predecessor to S/4HANA, running financials, procurement, manufacturing, and HR for a large installed base of enterprises that have not yet migrated to the cloud. External integrations reach ECC through NetWeaver Gateway (OData) or SAP PI/PO middleware.
What you can do
Read and write sales orders
Pull open and completed sales orders through the SAP Sales Order OData service (API_SALES_ORDER_SRV). Create new orders and update delivery dates or quantities from your product.
Sync vendor and supplier master data
Read vendor master records including payment terms, bank details, and purchasing org assignments from the SAP Vendor service. Write back updated contact or address data from your supplier portal.
Access GL accounts and financial postings
Pull General Ledger account balances and FI document postings via the SAP FI OData services. Askel handles SAP's fiscal-year and period structure so your analytics product sees correctly dated financial data.
Read purchase orders and goods receipts
Pull approved purchase orders, open goods receipt items, and three-way match status from the SAP MM module. Useful for AP automation products that need to validate invoices against POs.
Sync material and inventory data
Read material master records, plant stock levels, and storage location quantities. Askel normalizes SAP's plant and storage location hierarchy into a flat inventory view your product can display.
Read employee and HR organizational data
Pull active employees, org units, and position assignments from the SAP HCM OData services. Useful for workforce tools connecting to customers who have not yet moved to SuccessFactors.
Pulling ECC purchase orders into a supplier self-service portal
Aldermoor Chemicals runs their procurement and manufacturing on SAP ECC and has selected your supplier portal product to give vendors visibility into open purchase orders and expected delivery schedules. Aldermoor's procurement team has asked suppliers to confirm delivery dates directly in the portal, which then writes back to ECC.
- 1
Activate the SAP OData service
Aldermoor's SAP Basis team activates the Purchasing OData service (MM_PUR_PO_MAINT_V2_SRV) in SAP NetWeaver Gateway using transaction /IWFND/MAINT_SERVICE. They note the Gateway host URL, the SAP client number (e.g. 100), and create a dedicated user with Purchasing display and change authorizations.
- 2
Enter credentials in Askel
Aldermoor's IT admin enters the Gateway host URL, SAP client number, username, and password into the Askel setup screen inside your supplier portal. Askel composes the Basic auth header and adds the sap-client header to every request, then confirms connectivity by fetching one open PO.
- 3
Schema discovery
Askel reads the available OData entity sets and function imports from the activated services on Aldermoor's Gateway. Your CS team sees a mapping draft covering PO header and line item fields, delivery dates, vendor details, and goods receipt status within minutes.
- 4
Map and validate
Aldermoor uses an SAP user exit to populate a custom field with a preferred-carrier code. A CS rep maps this to the portal's carrier preference attribute and runs a dry-run against 100 open POs to confirm the data looks correct.
- 5
Go live
Suppliers log into the portal and see their open POs from ECC. When a supplier confirms a delivery date in the portal, Askel writes the confirmation back to the relevant PO in Aldermoor's ECC using the OData PATCH endpoint. Aldermoor's buyers see updated delivery commitments in ECC the same day.
Basic auth
The customer's SAP Basis team creates a dedicated user with the required ECC authorizations and activates the needed OData services in SAP NetWeaver Gateway. They provide the Gateway host URL, SAP client number, username, and password. Askel composes Basic auth and adds the sap-client header on every request. For customers routing through SAP PI/PO, the PI/PO endpoint URL is entered instead of the Gateway URL.
How Askel sits between your product and the customer's system
FAQ for SAP ECC
What is the difference between connecting via NetWeaver Gateway and via SAP PI/PO?+
Which ECC releases does this integration support?+
Can we scope access to a single SAP client or company code?+
What happens after the customer migrates from ECC to S/4HANA?+
catching drift before it breaks, and hitting go-live dates.
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