How To Fix CNV_IUUC_DHAPE_OPERS004 - Operator SLT reader for table &1 and mt_id &2 is blocked

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_DHAPE_OPERS - IUUC - Data Hub ABAP Pipeline Engine Operators

• Message number: 004

• Message text: Operator SLT reader for table &1 and mt_id &2 is blocked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_DHAPE_OPERS004 - Operator SLT reader for table &1 and mt_id &2 is blocked ?

  The SAP error message CNV_IUUC_DHAPE_OPERS004 indicates that the SLT (SAP Landscape Transformation) reader for a specific table is blocked. This typically occurs in scenarios where data replication is being performed from a source system to a target system, and the SLT replication process encounters an issue that prevents it from proceeding.
  Causes:
  
  Locking Issues: The table may be locked by another process, preventing the SLT reader from accessing it.
  Long-running Transactions: If there are long-running transactions on the source system that are holding locks on the table, this can lead to the SLT reader being blocked.
  Configuration Issues: Incorrect configuration of the SLT system or the source system can lead to replication issues.
  Resource Constraints: Insufficient resources (CPU, memory, etc.) on the source or target system can cause delays and blocking.
  Network Issues: Connectivity problems between the source and target systems can also lead to replication being blocked.
  
  Solutions:
  
  Check Locks: Use transaction codes like SM12 in the source system to check for locks on the table. If you find locks that are not needed, you can release them.
  Monitor Long-running Transactions: Use transaction codes like SM66 or SM50 to identify any long-running processes that may be holding locks on the table. If possible, terminate these processes.
  Review SLT Configuration: Ensure that the SLT configuration is correct and that all necessary settings are properly configured.
  Check System Resources: Monitor the performance of both the source and target systems to ensure they have adequate resources. If necessary, optimize the systems or allocate more resources.
  Restart SLT Replication: If the issue persists, consider stopping and restarting the SLT replication process. This can sometimes clear up transient issues.
  Check for Network Issues: Ensure that there are no network connectivity issues between the source and target systems.
  
  Related Information:
  
  SLT Monitoring: Use transaction code LTRC to monitor the SLT replication process and check for any errors or warnings.
  SAP Notes: Check for relevant SAP Notes that may provide additional insights or solutions for this specific error message.
  Documentation: Refer to the official SAP documentation for SLT for best practices and troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be necessary to engage SAP support for further assistance.