How To Fix SABP_KEY_REDUNDANCY028 - Check whether &1 can be removed

SAP Error Message - Details

• Message type: E = Error

• Message class: SABP_KEY_REDUNDANCY - Superfluous Keys Messages

• Message number: 028

• Message text: Check whether &1 can be removed

What causes this issue?

The table keys &V1& and &V2& are unique and the components of &V2& are
an initial part (SORTED) or a subset (HASHED) of &V1&. Check whether
&V1& can be removed.
INCLUDE INCL_MIGRATION_SCENARIO
Since both keys have the same access semantics but key &V2& has fewer
components, access with &V2& provides better performance. Check whether
the redundant keys were created in a migration scenario and whether one
of the two keys can be removed.

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 SABP_KEY_REDUNDANCY028 - Check whether &1 can be removed ?

  The SAP error message SABP_KEY_REDUNDANCY028 typically indicates that there is a redundancy in the key fields of a particular data structure or table. This error often arises when you are trying to delete or modify a key entry that is still being referenced elsewhere in the system.
  Cause:
  
  Redundant Key Entries: The key you are trying to remove is still being used in other records or tables, which prevents its deletion.
  Data Integrity Constraints: SAP enforces data integrity, and if the key is linked to other data, it cannot be removed without addressing those dependencies.
  Configuration Issues: There may be configuration settings that are causing the key to be treated as essential, even if it appears redundant.
  
  Solution:
  
  Check Dependencies: Before attempting to remove the key, check if it is being referenced in other tables or records. You can use transaction codes like SE11 (Data Dictionary) or SE16 (Data Browser) to investigate.
  Remove References: If you find that the key is being used elsewhere, you will need to remove or update those references before you can delete the key.
  Consult Documentation: Review the relevant SAP documentation or configuration guides to understand the implications of removing the key.
  Use Transaction Codes: Depending on the context, you may need to use specific transaction codes to manage the data (e.g., SE14 for database utility).
  Seek Help from SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SE11, SE16, and SE14 for data management.
  Data Dictionary: Understanding the data dictionary and how tables are related can help in identifying dependencies.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Testing in Development: Always test changes in a development environment before applying them to production to avoid data integrity issues.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.