How To Fix SABP_KEY_REDUNDANCY017 - Key &1 is unique and &2 is non-unique

SAP Error Message - Details

• Message type: E = Error

• Message class: SABP_KEY_REDUNDANCY - Superfluous Keys Messages

• Message number: 017

• Message text: Key &1 is unique and &2 is non-unique

What causes this issue?

The table key &V1& is unique and &V2& is not unique. However, the
components of &V1& are a subset of &V2&, which means that &V1& is more
selective than &V2&.
INCLUDE INCL_MIGRATION_SCENARIO
Check whether both keys are really needed or if one of the keys can be
removed.
The message is also issued if &V2& is a generic primary key whose
uniqueness is unknown. In this case, the worst case scenario is assumed
(that the primary key is not unique). However, since the unique
secondary key is a subset of the primary key at the same time, the
primary key must be unique. Check the definition of the primary key and
define it as unique if appropriate.

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_REDUNDANCY017 - Key &1 is unique and &2 is non-unique ?

  The SAP error message SABP_KEY_REDUNDANCY017 indicates a key redundancy issue in the context of data processing or data entry. Specifically, the message states that a key (identified as &1) is unique, while another key (identified as &2) is non-unique. This typically occurs in scenarios where the system expects a unique key but encounters a situation where the key is duplicated or not unique.
  Cause:
  
  Data Entry Error: The most common cause is that the user has entered data that violates the uniqueness constraint of the key fields.
  Configuration Issues: There may be issues in the configuration of the data model or database tables that define the uniqueness of keys.
  Data Migration Issues: If data has been migrated from another system, it may not conform to the uniqueness requirements of the target SAP system.
  Custom Development: Custom programs or enhancements may inadvertently create situations where unique keys are violated.
  
  Solution:
  
  Check Data Entry: Review the data being entered to ensure that the key fields are correctly populated and that there are no duplicates.
  Review Configuration: Check the configuration settings for the relevant data model or database tables to ensure that the uniqueness constraints are correctly defined.
  Data Cleanup: If the issue arises from existing data, perform a data cleanup to remove duplicates or correct the entries that violate the uniqueness constraint.
  Debug Custom Code: If the error is related to custom development, debug the code to identify where the uniqueness constraint is being violated and make necessary adjustments.
  Consult Documentation: Refer to SAP documentation or support notes related to the specific transaction or module you are working with for additional guidance.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to check specific transaction codes related to the module you are working with (e.g., MM, SD, FI).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the problem persists after following these steps, it may be beneficial to engage with SAP support for further assistance.