How To Fix FKKMA157 - Choose a unique key

FKKMA157 - Overview

• Message type: E = Error

• Message class: FKKMA - Messages for Master Agreement

• Message number: 157

• Message text: Choose a unique key

What causes this issue?

The key entered exists for both a product and a group.

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?

Use the input help to select a unique key.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FKKMA157 - Details

• The SAP error message FKKMA157: Choose a unique key typically occurs in the context of the SAP Convergent Charging (SAP CC) or SAP Contract Accounts Receivable and Payable (SAP FI-CA) modules. This error indicates that the system has encountered a situation where it requires a unique identifier (key) for a specific operation, but the provided key is not unique.
  Causes:
  
  Duplicate Entries: The most common cause is that there are duplicate entries in the database for the key you are trying to use. This could be due to incorrect data entry or a failure in the data processing logic.
  
  Configuration Issues: There may be issues with the configuration of the relevant tables or data structures that are supposed to enforce uniqueness.
  Data Migration Issues: If data has been migrated from another system, it’s possible that the migration process did not enforce uniqueness, leading to duplicates.
  Concurrent Processing: If multiple processes are trying to create or