How To Fix CNV_IUUC_REPLICATION040 - Close connection for mass transfer with ID &1 failed. &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_REPLICATION - IUUC replication messages (HANA)

• Message number: 040

• Message text: Close connection for mass transfer with ID &1 failed. &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_REPLICATION040 - Close connection for mass transfer with ID &1 failed. &2 ?

  The SAP error message CNV_IUUC_REPLICATION040 typically occurs during the data replication process in SAP systems, particularly when using the SAP Landscape Transformation (SLT) Replication Server. This error indicates that the system encountered an issue while trying to close a connection for a mass transfer process.
  Cause:
  The error can be caused by several factors, including:
  
  Network Issues: Temporary network disruptions or connectivity problems between the source and target systems can lead to this error.
  Database Locking: If there are locks on the database tables involved in the replication process, it may prevent the connection from closing properly.
  Resource Limitations: Insufficient system resources (like memory or CPU) on either the source or target system can lead to failures in the replication process.
  Configuration Issues: Incorrect configuration settings in the SLT or related components can also lead to this error.
  Timeouts: If the replication process takes too long, it may exceed the timeout settings, causing the connection to fail.
  
  Solution:
  To resolve the CNV_IUUC_REPLICATION040 error, you can take the following steps:
  
  Check Network Connectivity: Ensure that there are no network issues between the source and target systems. You can use tools like ping or traceroute to diagnose connectivity problems.
  Review Logs: Check the SLT logs for more detailed error messages. The logs can provide insights into what went wrong during the replication process.
  Monitor System Resources: Use monitoring tools to check the resource usage on both the source and target systems. If resources are low, consider optimizing the system or increasing the resources.
  Database Locks: Investigate if there are any locks on the database tables involved in the replication. You can use transaction codes like SM12 to check for locks and release them if necessary.
  Configuration Review: Review the SLT configuration settings to ensure they are correctly set up. Pay attention to parameters related to timeouts and connection settings.
  Restart Replication: If the issue persists, you may need to stop and restart the replication process. This can sometimes clear transient issues.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLT, SM37 (for job monitoring), and SM21 (for system logs).
  Documentation: Refer to the official SAP documentation for SLT for detailed information on configuration and troubleshooting.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem continues after trying these solutions, consider reaching out to SAP support for further assistance.