Procurement Changes from SAP ECC to SAP S/4HANA

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ECC to S/4HANA procurement change card

• Find items: Simplification Item Catalog, SAP Readiness Check, simplification item checks (/SDF/RC_START_CHECK).
• Read the SAP Notes behind each relevant item; classify by impact and effort.
• Suppliers = business partners: roles FLVN00 (company code), FLVN01 (purchasing org); XK01 redirects to BP.
• CVI and vendor-to-BP conversion happen before the conversion; cleanse bank and tax data early.
• MATDOC replaces MKPF/MSEG; stock is calculated; MB posting transactions → MIGO.
• Watch: direct writes to inventory tables, batch inputs on retired transactions, supplier interfaces, material number length, rebate reports.
• Retire unused custom code; compare every retained report with ECC or a standard report.
• Regression on converted data, including in-flight open POs, GR/IR items and blocked invoices.
• Reconcile open POs, stock, GR/IR and supplier balances across each conversion.