SAP ECC modules: fit and gap explorer

SAP ECC 6.0 is organized into application components: Sales and Distribution (SD), Materials Management (MM), Production Planning (PP, including PP-PI, PP-REM and KANBAN), Quality Management (QM), Plant Maintenance (PM), Customer Service (CS), Project System (PS), Logistics Execution and Warehouse Management (LE, LE-WM), Financial Accounting (FI), Asset Accounting (FI-AA), Controlling (CO), Human Capital Management (HCM), plus cross-application components such as Variant Configuration, Engineering Change Management and the Document Management System.

SAP ERP 6.0 is the product; SAP ECC 6.0 (ERP Central Component) is its central application, which replaced R/3 Enterprise. SAP ERP is one part of the SAP Business Suite, which also includes SAP SCM (APO), SAP CRM, SAP SRM and SAP PLM.

Optimization-based planning, demand planning, supply network planning and global ATP are SAP APO. Advanced warehousing (slotting, labor management, yard) is SAP EWM. Export control and sanctioned party screening are SAP GTS. IFRS 15 and ASC 606 contract accounting is SAP Revenue Accounting and Reporting. Machine OEE dashboards come from SAP MII, SAP ME or a third-party MES.

Mainstream maintenance for SAP ERP 6.0 EHP6, EHP7 and EHP8 ends on December 31, 2027. SAP offers optional extended maintenance to December 31, 2030 for an extra fee on the maintenance base. EHP0 to EHP5 left mainstream maintenance at the end of 2025. After that, customer-specific maintenance applies, with no new legal changes or support packages.

Yes, through IDocs. Common message types are ORDERS, ORDCHG and DELINS inbound for sales, and ORDRSP, DESADV and INVOIC outbound, with matching messages for purchasing. ECC does not translate to ANSI X12 or EDIFACT itself, so you need an EDI subsystem, a VAN service or SAP PI/PO.

LE-WM is part of ECC and covers bins, strategies, transfer orders, wave picks and RF transactions. SAP positions EWM as the successor for advanced warehousing, and S/4HANA moves new warehouse work to EWM. If you plan to stay on ECC, WM works; if you plan to move to S/4HANA, check the WM status in the S/4HANA simplification list.

Each selected requirement is weighted by priority: Must 3, Should 2, Nice to have 1. A native component scores 100 percent, an add-on from the same vendor 75, a partner product 50 and a gap 0. Items marked verify with vendor count at their stated fit but are listed separately so you can confirm them.

Score your requirements against SAP ECC, then compare with SAP S/4HANA or another ERP. Requirements met today by APO, EWM, GTS or custom ABAP are the ones to check first, because their successor products and data models differ.