How To Fix FMKU078 - In the transfer the grouping key for &1 must be unique

FMKU078 - Overview

• Message type: E = Error

• Message class: FMKU - FM budgeting, kernel utilities

• Message number: 078

• Message text: In the transfer the grouping key for &1 must be unique

What causes this issue?

When you transfer the budget, the &V1& side has different grouping keys.
This message is displayed because you have activated a calculation of
the grouping key.
Please see the IMG activity <DS:SIMG.FMKU_GROUPING_KEY>Define Grouping
Key</> for more information.
The BAdI implementation of the checks for the grouping key is also
active.

System Response

Processing is stopped.

How to fix this error?

You should ensure that the grouping key is the same as in your carryover
document.
If you want to carry over the budget from one grouping key to another,
you must deactivate the implementation
<DS:BI.FMKU_BUDGET_EVNT_GK>Budgeting Interface</> of the BAdI
<DS:SIMG.FMKU_BUDGET_EVNT>Enhance Checks and Document Postings</>.

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.

FMKU078 - Details

• The SAP error message FMKU078 indicates that there is an issue with the uniqueness of the grouping key during a transfer process in the Funds Management (FM) module. This error typically arises when you are trying to post a transaction that requires a unique grouping key, but the system finds duplicate entries for that key.
  
  Cause:
  The error occurs when:
  
  Duplicate Grouping Key: The grouping key (which could be a combination of fields like fund, commitment item, etc.) is not unique in the context of the transaction you are trying to process.
  Incorrect Data Entry: There may be incorrect or duplicate data entries in the relevant tables that are being referenced during the transaction.
  
  Configuration Issues: The configuration settings for the Funds Management module may not be set up correctly, leading to conflicts in how grouping keys are defined or processed.
  
  
  Solution:
  To resolve the FMKU078 error, you can take the following steps:
  
  
  Check for Duplicates:
  
  Review the entries