How To Fix REXAFMCA002 - Period key is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: REXAFMCA - PSCD Integration

• Message number: 002

• Message text: Period key is not unique

What causes this issue?

The revenue type and calculation period of the condition of the period
key for the items of the billing document are not unique.

System Response

The document cannot be posted.

How to fix this error?

Check the settings for the period keys allowed for revenue type &v1&.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message REXAFMCA002 - Period key is not unique ?

  The SAP error message REXAFMCA002, which states "Period key is not unique," typically occurs in the context of the SAP system's financial accounting or controlling modules, particularly when dealing with period-end closing processes or when trying to post transactions that involve period keys.
  Cause:
  The error indicates that there is a conflict with the period key being used in the transaction. This can happen for several reasons:
  
  Duplicate Period Keys: There may be multiple entries in the system for the same period key, which should be unique.
  Configuration Issues: The configuration settings for the fiscal year variant or period definitions may not be set up correctly.
  Data Integrity Issues: There may be inconsistencies in the database or issues with the data being processed.
  Incorrect Posting Period: The posting period may not be open or may have been closed, leading to conflicts with the period key.
  
  Solution:
  To resolve the REXAFMCA002 error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Use transaction codes like SE16 or SE11 to check the relevant tables (e.g., T001, T001B) for duplicate entries for the period key in question.
  Ensure that the period key is unique across the relevant tables.
  
  
  
  Review Configuration:
  
  Go to the configuration settings for the fiscal year variant and ensure that the periods are defined correctly.
  Check the settings in transaction code OB29 (Fiscal Year Variant) and ensure that the periods are set up properly.
  
  
  
  Validate Posting Period:
  
  Check if the posting period is open for the transaction you are trying to execute. You can do this in transaction code OB52 (Open and Close Posting Periods).
  If the period is closed, you may need to open it temporarily to complete the transaction.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the relevant financial data to ensure there are no integrity issues.
  You can use transaction code SARA to archive old data if necessary, which may help in resolving conflicts.
  
  
  
  Consult Documentation:
  
  Review SAP Notes and documentation related to this error message for any specific patches or updates that may address the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: SE16, SE11, OB29, OB52, SARA
  Tables to Check: T001 (Company Codes), T001B (Fiscal Year Variants)
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may provide additional insights or fixes related to this error.
  
  By following these steps, you should be able to identify the root cause of the REXAFMCA002 error and implement a solution to resolve it.