How To Fix UMG302 - Some tables exist in the Default Exception List already.

SAP Error Message - Details

• Message type: E = Error

• Message class: UMG - Message Class for the Unicode Migration Tool.

• Message number: 302

• Message text: Some tables exist in the Default Exception List already.

What causes this issue?

You tried to insert tables into the Customer Exception List. But some of
the tables exist already in the Default Exception List delivered by
SAP.

System Response

Only tables which are not in the Default Exception List have been
inserted into the Customer Exception List.

How to fix this error?

If you want to change the settings for a table in the Default Exception
List, you have to delete it first from the Default Exception List. After
wards you can insert the table into the Customer Exception List.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UMG302 - Some tables exist in the Default Exception List already. ?

  The SAP error message UMG302, which states "Some tables exist in the Default Exception List already," typically occurs in the context of data migration or data management processes, particularly when using tools like SAP Data Services or SAP Landscape Transformation (SLT). This error indicates that the system has detected that certain tables you are trying to add to an exception list are already included in the default exception list.
  
  Cause:
  
  Duplicate Entries: The tables you are trying to add are already present in the default exception list, which is used to exclude certain tables from being processed during data migration or replication.
  
  Configuration Issues: There may be a misconfiguration in the data migration settings or the exception list itself.
  User Error: The user may have attempted to add tables that are not meant to be included in the current operation.
  
  
  Solution:
  
  Check the Default Exception List: Review the default exception list to confirm which tables are