How To Fix SABP_KEY_REDUNDANCY002 - The keys &2 and &1 both have type NON-UNIQUE SORTED

SAP Error Message - Details

• Message type: E = Error

• Message class: SABP_KEY_REDUNDANCY - Superfluous Keys Messages

• Message number: 002

• Message text: The keys &2 and &1 both have type NON-UNIQUE SORTED

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 &V1& is used, &V2& could also be used
(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_REDUNDANCY002 - The keys &2 and &1 both have type NON-UNIQUE SORTED ?

  The SAP error message SABP_KEY_REDUNDANCY002 indicates that there is a redundancy issue with the keys defined in a database table or a data structure. Specifically, it states that two keys (identified as &1 and &2) are both defined as NON-UNIQUE SORTED keys, which is not allowed in SAP.
  Cause:
  The error occurs when:
  
  You have defined two keys in a table or structure that are both marked as NON-UNIQUE SORTED.
  This means that both keys can contain duplicate values, which can lead to ambiguity when trying to access records based on these keys.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Key Definitions:
  
  Go to the Data Dictionary (SE11) and check the table or structure where the error is occurring.
  Look at the key definitions and identify the keys that are causing the redundancy.
  
  
  
  Modify Key Types:
  
  Decide whether one of the keys can be changed to a UNIQUE key if it is supposed to have unique values.
  Alternatively, if both keys need to remain as NON-UNIQUE SORTED, you may need to remove one of the keys entirely.
  
  
  
  Check Dependencies:
  
  Ensure that removing or changing a key does not affect any existing functionality or dependencies in your application.
  
  
  
  Transport Changes:
  
  If you are working in a development environment, make sure to transport your changes to the appropriate environments (e.g., QA, Production) after testing.
  
  
  
  Re-activate the Table/Structure:
  
  After making changes, you may need to activate the table or structure again to ensure that the changes take effect.
  
  
  
  Related Information:
  
  Key Types: In SAP, keys can be defined as UNIQUE or NON-UNIQUE. A UNIQUE key ensures that all values in that key are distinct, while a NON-UNIQUE key allows for duplicate values.
  Data Dictionary (SE11): This is the transaction code used to access the Data Dictionary in SAP, where you can manage tables, views, data elements, domains, etc.
  Performance Considerations: When designing keys, consider the performance implications of using NON-UNIQUE keys, especially in large datasets, as they can affect data retrieval times.
  
  By following these steps, you should be able to resolve the SABP_KEY_REDUNDANCY002 error and ensure that your table or structure is correctly defined without key redundancies.