How To Fix SABP_KEY_REDUNDANCY004 - Check whether both keys are necessary

SAP Error Message - Details

• Message type: E = Error

• Message class: SABP_KEY_REDUNDANCY - Superfluous Keys Messages

• Message number: 004

• Message text: Check whether both keys are necessary

What causes this issue?

The table keys &V2& and &V1& are of the type NON-UNIQUE SORTED and the
components of &V1& are an initial part of &V2&. Check whether both keys
are required.
Key &V2& has more components than &V1& and is thus more selective. In
the case of all statements where key &V1& is used, &V2& could be used
instead (exception: READ/DELETE # WITH TABLE KEY#, where all key
components must be supplied exactly).
INCLUDE INCL_MIGRATION_SCENARIO
Check whether only one of the two keys is or could be used consistently
and whether the other key could 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_REDUNDANCY004 - Check whether both keys are necessary ?

  The SAP error message SABP_KEY_REDUNDANCY004 indicates that there is a redundancy in the key fields defined for a particular object or data structure. This typically occurs when two or more key fields are defined that do not provide unique identification for the records, leading to potential conflicts or ambiguities in data processing.
  Cause:
  The primary cause of this error is the presence of multiple key fields that are not necessary for uniquely identifying records in a database table or data structure. This can happen due to:
  
  Incorrect Configuration: During the configuration of a data structure, multiple fields may have been incorrectly marked as key fields.
  Data Model Changes: Changes in the data model or business requirements may have rendered some key fields redundant.
  Legacy Data: If the system has been upgraded or migrated from an older version, legacy configurations may still exist that are no longer valid.
  
  Solution:
  To resolve the SABP_KEY_REDUNDANCY004 error, you can follow these steps:
  
  
  Review Key Fields: Check the definition of the data structure or table where the error is occurring. Identify the key fields that have been defined.
  
  
  Determine Necessity: Assess whether both key fields are necessary for uniquely identifying records. If one of the fields is redundant, consider removing it from the key definition.
  
  
  Modify Data Structure: If you determine that a key field is indeed redundant, you can modify the data structure:
  
  Go to the relevant transaction (e.g., SE11 for Data Dictionary).
  Open the table or structure definition.
  Adjust the key fields accordingly by removing the unnecessary key field.
  
  
  
  Test Changes: After making changes, test the data structure to ensure that it functions correctly without the redundant key field.
  
  
  Documentation: Document the changes made for future reference and to inform other team members about the modifications.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific guidance or patches related to this error message. SAP frequently updates its knowledge base with solutions for common issues.
  Data Dictionary: Familiarize yourself with the SAP Data Dictionary (transaction SE11) to understand how key fields are defined and managed.
  Consult with Functional Teams: If you are unsure about the necessity of certain key fields, consult with functional teams or business analysts who understand the data model and business requirements.
  
  By following these steps, you should be able to resolve the SABP_KEY_REDUNDANCY004 error and ensure that your data structures are correctly configured.