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SAP EWM Help Latest Questions

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PrafulAnand

How to Fix qRFC Queue Errors Blocking Inbound Delivery Processing in SAP EWM?

I am facing an issue in SAP EWM where inbound deliveries are not getting processed due to qRFC queue errors.

Here are the symptoms:

  • Queues are stuck in transaction SMQ2
  • Inbound delivery is created but not distributed properly to EWM
  • No warehouse tasks are getting created
  • System shows queue errors but without clear root cause

I would like to understand:

  1. How to identify the exact reason for qRFC queue failure
  2. Steps to safely reprocess the stuck queues
  3. Common configuration or integration issues causing this
  4. Best practices to avoid such queue blocks in future

Any detailed troubleshooting steps or real-time examples would be very helpful.

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1 Him Answer

  1. qRFC queue errors are one of the most common issues in SAP EWM, and they can block inbound delivery processing completely.
    If queues are stuck in SMQ2, it usually means something failed during data transfer between S/4HANA and EWM.


    Step-by-Step Troubleshooting

     Step 1: Check the Queue Error (Most Important)

    Go to:

    • SMQ2 (Inbound Queue)

     Open the stuck queue and check:

    • Error message
    • Function module name
    • Queue name

    ✔ This gives the exact root cause


     Step 2: Analyze Error Details

    Click on the error → Display details

     Common errors you may see:

    • Missing Business Partner
    • Product not available in EWM
    • Configuration missing
    • Authorization issue

     Step 3: Fix the Root Cause

    Based on the error:

    • Missing BP → Replicate Business Partner
    • Missing Product → Extend product to EWM
    • Config issue → Correct settings in SPRO

     Always fix the issue before reprocessing queue


     Step 4: Reprocess the Queue Safely

    After fixing:

    • Go back to SMQ2
    • Select the queue
    • Click Execute (F8)

    ✔ Queue should process successfully


     Step 5: Verify in EWM

    Go to:

    • /SCWM/MON

     Check:

    • Inbound delivery created
    • Warehouse tasks generated

     Common Causes of qRFC Errors

    • Missing master data (BP, Product, Location)
    • Incorrect integration settings
    • Queue dependency issues
    • System dump or short dump
    • Lock issues or parallel processing problems

     Real-Time Example

    In one project:

    • Queue stuck in SMQ2
    • Error: Business Partner not found

     Fix:

    • Replicated BP using standard program
    • Reprocessed queue

    ✔ Inbound delivery processed successfully


     Best Practices to Avoid Queue Issues

    • Regularly monitor SMQ1 / SMQ2
    • Ensure master data is always synced
    • Avoid manual deletion of queues
    • Set up alerts for queue failures
    • Test integration scenarios properly

     Quick Tips

    • Always check error message first (don’t guess)
    • Never reprocess queue without fixing issue
    • Use SLG1 for additional logs
    • Check dumps in ST22 if needed

    💬 Conclusion

    qRFC queue errors are usually caused by missing data or integration gaps. Once you identify the root cause in SMQ2, fixing and reprocessing the queue will resolve the issue.