How To Fix CNV21500304 - Error when reading structure with function &1 for cluster &2 RELID &3

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV21500 - Messages for HR conversions basis

• Message number: 304

• Message text: Error when reading structure with function &1 for cluster &2 RELID &3

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 CNV21500304 - Error when reading structure with function &1 for cluster &2 RELID &3 ?

  The SAP error message CNV21500304 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with reading a specific structure related to a cluster table during the migration process.
  Cause:
  
  Missing or Incomplete Data Structure: The structure that the function is trying to read may not exist or may not be properly defined in the system.
  Incorrect Configuration: The configuration settings for the migration process may be incorrect, leading to the inability to read the required data.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to access the required data structures.
  Data Consistency Issues: There may be inconsistencies in the data that prevent the system from reading the structure correctly.
  
  Solution:
  
  Check Data Structure: Verify that the structure referenced in the error message exists in the system. You can do this by checking the relevant data dictionary (SE11) for the structure and ensuring it is correctly defined.
  Review Migration Configuration: Ensure that the migration settings are correctly configured. Check the mapping and transformation rules to ensure they align with the source and target structures.
  User Authorizations: Confirm that the user executing the migration has the necessary authorizations to access the data structures involved in the migration.
  Data Consistency Check: Perform a consistency check on the data to ensure there are no issues that could prevent the reading of the structure. This may involve checking for missing or corrupted records in the source data.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently releases notes that provide fixes or workarounds for known issues.
  Debugging: If the issue persists, consider debugging the function module or program that is generating the error to identify the root cause.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11 (Data Dictionary), SE37 (Function Module), and ST22 (Dump Analysis) to investigate the issue further.
  SAP Community: Engage with the SAP Community or forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue cannot be resolved internally, consider reaching out to SAP Support for assistance, providing them with the error details and any relevant logs.
  
  By following these steps, you should be able to diagnose and resolve the CNV21500304 error effectively.