How To Fix IUUC_IMIG801 - Call of function module &1 failed, return code &2

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_IMIG - IUUC@IMIG Incremental migration (MDS)

• Message number: 801

• Message text: Call of function module &1 failed, return code &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.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_IMIG801 - Call of function module &1 failed, return code &2 ?

  The SAP error message IUUC_IMIG801 indicates that there was a failure when calling a function module during the execution of the SAP Landscape Transformation (SLT) replication process. The error message typically includes the name of the function module that failed and the return code associated with that failure.
  Cause:
  The error can be caused by several factors, including but not limited to:
  
  Function Module Issues: The function module specified in the error message may have issues such as incorrect parameters, missing data, or logic errors.
  Authorization Problems: The user executing the function may not have the necessary authorizations to call the function module.
  Data Consistency Issues: There may be inconsistencies in the data being processed, leading to failures in the function module.
  System Configuration: Incorrect configuration settings in the SLT system or the source/target systems can lead to this error.
  Network Issues: If the function module involves communication between systems, network issues could cause the call to fail.
  
  Solution:
  To resolve the IUUC_IMIG801 error, you can follow these steps:
  
  Check the Function Module: Identify the function module mentioned in the error message and check its implementation for any issues. You can use transaction SE37 to view the function module.
  Review Return Code: Analyze the return code provided in the error message. Different return codes can indicate different issues, so understanding the specific return code can help in diagnosing the problem.
  Authorization Check: Ensure that the user executing the function has the necessary authorizations. You can check this using transaction SU53 to analyze authorization failures.
  Data Validation: Validate the data being processed to ensure there are no inconsistencies or missing values that could cause the function module to fail.
  Check SLT Configuration: Review the SLT configuration settings to ensure they are correct. This includes checking the connection settings between the source and target systems.
  Review Logs: Check the SLT logs for more detailed error messages or stack traces that can provide additional context about the failure. You can use transaction SLT_LOG to view the logs.
  Consult SAP Notes: Search for relevant SAP Notes that may address this specific error. SAP Notes often provide solutions or workarounds for known issues.
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Module
  SU53: Authorization Check
  SLT_LOG: SLT Logs
  
  
  Documentation: Review the official SAP documentation for SLT and the specific function module to understand its expected behavior and requirements.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  By following these steps, you should be able to diagnose and resolve the IUUC_IMIG801 error effectively.