Comments on: Stock Mismatch Between SAP EWM and ERP – How to Identify and Resolve the Root Cause? https://www.sapewmhelp.com/question/stock-mismatch-between-sap-ewm-and-erp-how-to-identify-and-resolve-the-root-cause/ SAP EWM questions answered by experts — ABAP, S/4HANA, warehouse management Fri, 13 Feb 2026 12:31:27 +0000 hourly 1 https://wordpress.org/?v=7.0.2 By: PrafulAnand https://www.sapewmhelp.com/question/stock-mismatch-between-sap-ewm-and-erp-how-to-identify-and-resolve-the-root-cause/#comment-220 Fri, 13 Feb 2026 12:31:27 +0000 https://www.sapewmhelp.com/?question=stock-mismatch-between-sap-ewm-and-erp-how-to-identify-and-resolve-the-root-cause#comment-220 Stock mismatch between SAP EWM and ERP is a very common production issue and usually indicates that a posting or synchronization step was interrupted or bypassed. Even when no open tasks or queues are visible, inconsistencies can still exist at a deeper level.

Below is a practical, real-project troubleshooting guide.

1. Understand Where the Mismatch Exists First
Before correcting anything, identify where the inconsistency originates.

Check:
– /SCWM/MON for EWM stock
– MMBE / MB52 for ERP stock
– Compare storage location, batch, and stock type

This helps decide whether EWM or ERP is the leading system for correction.

2. Check for Incomplete or Failed Posting Changes
Posting changes are a top reason for mismatches.

– Check open or canceled posting changes in /SCWM/MON
– Verify whether posting changes were confirmed in EWM but not posted to ERP

3. Verify Physical Inventory Posting in Both Systems
Even if PI documents are closed:
– Verify PI posting in EWM
– Check ERP material documents related to PI

4. Check qRFC Queues Carefully
Recheck SMQ1 / SMQ2 for:
– Stock synchronization queues
– Old or previously failed messages

5. Analyze Application Logs
Check SLG1 with objects:
– /SCWM/ERP
– /SCWM/PI
– /SCWM/POST

6. Check for Manual ERP Movements
Ensure no goods movements were posted directly in ERP using MIGO.

7. Validate Stock Type and Availability Group Mapping
Ensure EWM stock types are correctly mapped to ERP stock types.

Safest Way to Correct Stock Differences:
– If EWM stock is correct, adjust ERP stock
– If ERP stock is correct, adjust EWM stock using posting change or correction tools

Never delete stock directly from database tables.

In most real projects, stock mismatch is caused by incomplete posting changes, PI issues, manual ERP postings, or mapping errors.

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