How To Fix SABP_KEY_REDUNDANCY008 - Check whether both keys are necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: SABP_KEY_REDUNDANCY - Superfluous Keys Messages

• Message number: 008

• Message text: Check whether both keys are necessary

What causes this issue?

The table keys &V1& and &V2& are both of the type SORTED. The non-unique
key &V1& is an initial part of the unique key &V2&. Check whether both
keys are required.
INCLUDE INCL_MIGRATION_SCENARIO
The key &V2& has more components than &V1& and is thus more selective.
In the case of all statements where the key &V1& is used, &V2& could
also be used (exception: READ/DELETE # WITH TABLE KEY#, where all key
components have to be assigned exactly).
Check whether only one of the keys is used or could be used and whether
the other key can therefore 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_REDUNDANCY008 - Check whether both keys are necessary ?

  The SAP error message SABP_KEY_REDUNDANCY008 indicates that there is a redundancy in the key fields of a particular data structure or table. This typically occurs when two or more key fields are defined in a way that makes one of them unnecessary for uniquely identifying records.
  Cause:
  The error arises when:
  
  Two or more fields are defined as key fields in a database table or structure, but one of them can be derived from the other(s).
  The system detects that the combination of key fields does not provide additional uniqueness, leading to redundancy.
  
  Solution:
  To resolve this error, you should:
  
  Review Key Fields: Check the definition of the key fields in the relevant table or structure. Identify if both fields are necessary for the uniqueness of the records.
  Remove Redundant Key: If you find that one of the key fields can be derived from the other(s) or is not needed for uniqueness, consider removing it from the key definition.
  Adjust Data Model: If the redundancy is due to a design flaw, you may need to adjust the data model to ensure that only necessary fields are included as keys.
  Test Changes: After making changes, test the data model to ensure that it still meets the business requirements and that the error no longer occurs.
  
  Related Information:
  
  Data Dictionary (SE11): You can use transaction SE11 to view and modify the table or structure definitions.
  Key Field Definition: Understand the implications of changing key fields, as it may affect existing data and application logic.
  Documentation: Refer to SAP documentation or consult with your SAP Basis or ABAP team for best practices regarding key field definitions.
  Impact Analysis: Before making changes, perform an impact analysis to understand how it might affect other parts of the system.
  
  By following these steps, you should be able to resolve the SABP_KEY_REDUNDANCY008 error effectively.