How To Fix FMFG_MM01059 - Account assignment category cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: FMFG_MM01 - Message id for Multi funding

• Message number: 059

• Message text: Account assignment category cannot be changed

What causes this issue?

You tried to change the account assignment category in a fund-related
item.

System Response

The document cannot be saved with the changed account assignment
category.

How to fix this error?

Change the account assignment category back to the original one.

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 FMFG_MM01059 - Account assignment category cannot be changed ?

  The SAP error message FMFG_MM01059, which states "Account assignment category cannot be changed," typically occurs in the context of financial management and materials management when there is an attempt to change the account assignment category of a document or transaction that is not allowed.
  Cause:
  
  Document Status: The document may already be posted or in a status that does not allow changes to the account assignment category.
  Configuration Settings: The system configuration may restrict changes to certain fields after a document has been created or posted.
  Data Integrity: Changing the account assignment category could lead to inconsistencies in financial reporting or material management, hence the restriction.
  Transaction Type: Certain transaction types may have predefined account assignment categories that cannot be altered.
  
  Solution:
  
  Check Document Status: Verify if the document is in a status that allows changes. If it has been posted, you may need to reverse or cancel the document before making changes.
  Review Configuration: Consult with your SAP configuration team to understand the settings related to account assignment categories. They may need to adjust the configuration if necessary.
  Create a New Document: If changing the account assignment category is not possible, consider creating a new document with the correct account assignment category and then canceling the original document.
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or solutions related to this error message.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to the document you are working with (e.g., ME21N for purchase orders, FB50 for general ledger entries).
  User Authorizations: Ensure that you have the necessary authorizations to make changes to the document.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation for account assignment categories and their implications in financial and materials management.
  
  If the issue persists after trying the above solutions, it may be beneficial to involve your SAP support team or consult with an SAP expert for further assistance.