How To Fix CNV_IUUC_TCR_MAIN020 - Cannot read table class for table &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_IUUC_TCR_MAIN - transactional consistent replication main package

• Message number: 020

• Message text: Cannot read table class for table &1

What causes this issue?

No entry exists in table IUUC_TABLES for the given table.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_IUUC_TCR_MAIN020 - Cannot read table class for table &1 ?

  The SAP error message CNV_IUUC_TCR_MAIN020 indicates that the system is unable to read the table class for a specified table. This error typically occurs during data migration or transformation processes, particularly when using the SAP Landscape Transformation (SLT) or SAP Data Services.
  Cause:
  
  Missing Table Class: The table class for the specified table may not be defined in the system. This can happen if the table is newly created or if there are inconsistencies in the system.
  Authorization Issues: The user executing the operation may not have the necessary authorizations to access the table class.
  Technical Issues: There may be technical issues with the database or the SAP system that prevent the reading of the table class.
  Incorrect Configuration: The configuration settings for the data migration or transformation process may be incorrect, leading to the inability to read the table class.
  
  Solution:
  
  
  Check Table Class Definition:
  
  Verify if the table class for the specified table exists in the system. You can do this by checking the relevant configuration in the SAP system.
  If the table class is missing, you may need to create it or adjust the existing configuration.
  
  
  
  Review Authorizations:
  
  Ensure that the user executing the operation has the necessary authorizations to access the table class. You may need to consult with your SAP security team to verify and adjust user roles and permissions.
  
  
  
  Check System Logs:
  
  Review the system logs (transaction codes like SLG1) for any additional error messages or warnings that may provide more context about the issue.
  
  
  
  Reconfigure Data Migration Settings:
  
  If the error is related to data migration, review the configuration settings in the SLT or data services to ensure they are set up correctly.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that resolve the issue.
  
  
  
  Technical Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with detailed information about the error, including the context in which it occurred.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary) to check the table definitions and SE37 (Function Builder) to check any related function modules.
  Documentation: Review the SAP documentation related to SLT or the specific data migration tool you are using for best practices and troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other online resources where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.