How To Fix WRF_AT136 - Could not block the relevant distribution data (system error)

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_AT - Messages for Allocation Table RTFASH

• Message number: 136

• Message text: Could not block the relevant distribution data (system error)

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_AT136 - Could not block the relevant distribution data (system error) ?

  SAP Error Message:
  
  WRF_AT136 Could not block the relevant distribution data (system error)
  
  Cause:
  This error typically occurs in SAP Workflow or ALE (Application Link Enabling) scenarios when the system tries to block or lock distribution data (such as change pointers, IDocs, or workflow tasks) but fails due to underlying system issues. The failure to block the data can be caused by:
  
  Database lock conflicts or deadlocks.
  Inconsistent or corrupted distribution data.
  Insufficient authorizations or missing system resources.
  Problems in the communication layer or RFC connections.
  Issues with the SAP kernel or buffer inconsistencies.
  Transport or update inconsistencies in the workflow or ALE tables.
  
  
  Solution:
  
  
  Check for Lock Conflicts:
  
  Use transaction SM12 to check for existing locks on the relevant tables or objects.
  If stale or blocking locks exist, analyze and delete them carefully if appropriate.
  
  
  
  Analyze System Logs:
  
  Use SM21 to check system logs for related errors or warnings around the time the error occurred.
  Look for database or communication errors.
  
  
  
  Check Workflow or ALE Configuration:
  
  Verify that the distribution model and change pointers are correctly configured.
  Use BD87 to reprocess failed IDocs if applicable.
  Check workflow logs in SWI1 or SWI2_FREQ for related workflow errors.
  
  
  
  Check Authorizations:
  
  Ensure the user or background job has the necessary authorizations to block or process distribution data.
  
  
  
  Database and Kernel Health:
  
  Check database consistency and perform database health checks.
  Ensure the SAP kernel is up to date and consistent with the system.
  
  
  
  Restart or Reset Communication:
  
  If the error is related to RFC or communication, test RFC connections in SM59.
  Restart the affected background jobs or communication processes.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to message WRF_AT136 for any known bugs or patches.
  If the problem persists, consider raising a support ticket with SAP, providing detailed logs and system information.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12 – Lock Entries
  SM21 – System Log
  BD87 – Reprocess IDocs
  SWI1 / SWI2_FREQ – Workflow Logs
  SM59 – RFC Destinations
  
  
  
  Tables Involved:
  
  Distribution data often involves tables like EDIDC, EDIDS (IDoc control and status records), or workflow-related tables.
  
  
  
  Common Scenarios:
  
  Workflow tasks stuck due to locking issues.
  ALE distribution failing due to database locks.
  Change pointers not processed because of system errors.
  
  
  
  
  Summary:
  
  The error "WRF_AT136 Could not block the relevant distribution data (system error)" indicates a failure in locking distribution data, often due to database locks, configuration issues, or system inconsistencies. The resolution involves checking locks, system logs, authorizations, and communication settings, and applying SAP Notes or patches if necessary.