How To Fix FMCU020 - Combination &1 / &2 is not allowed for automatic posting for &3, &4

SAP Error Message - Details

• Message type: E = Error

• Message class: FMCU - Customizing for budgeting in FM

• Message number: 020

• Message text: Combination &1 / &2 is not allowed for automatic posting for &3, &4

What causes this issue?

You want to use the process/budget type combination &V1&/&V2& in FM area
&V3& with &V4& in order to have the system carry out an automatic
posting. However, the current Customizing settings only allow the use of
this combination for manual postings.

System Response

How to fix this error?

Choose a process/budget type combination for which the flag <LB><LS>No
manual posting</></><LS> </>is set in Customizing.

Procedure for System Administrators

If you want to change the Customizing settings, choose the Customizing
pushbutton.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FMCU020 - Combination &1 / &2 is not allowed for automatic posting for &3, &4 ?

  The SAP error message FMCU020 indicates that a specific combination of account types or other parameters is not allowed for automatic posting in the context of financial transactions. This error typically arises in the context of financial accounting, particularly when dealing with automatic postings in the SAP system.
  Cause:
  The error message FMCU020 can occur due to several reasons, including:
  
  
  Invalid Account Combination: The combination of the specified accounts (e.g., &1 and &2) is not valid for the type of transaction being processed (e.g., &3 and &4). This could be due to configuration settings in the financial accounting module.
  
  
  Account Type Restrictions: Certain account types may have restrictions on how they can be used together in automatic postings. For example, you may not be allowed to post to a revenue account and an expense account simultaneously.
  
  
  Posting Rules: The posting rules defined in the system may not allow the combination of accounts for the specific transaction type.
  
  
  Configuration Issues: There may be issues with the configuration of the financial accounting settings in the SAP system, such as the settings for automatic postings in the relevant document types.
  
  
  Solution:
  To resolve the FMCU020 error, you can take the following steps:
  
  
  Check Account Combinations: Review the account combinations being used in the transaction. Ensure that they are valid and allowed for the type of posting you are attempting.
  
  
  Review Configuration Settings: Check the configuration settings in the SAP system for automatic postings. This can be done in the following areas:
  
  Transaction Codes: Use transaction codes like OB40 (for defining posting rules) or OBY6 (for defining account types) to review the settings.
  Document Types: Ensure that the document types being used allow the specified account combinations.
  
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the error message and the allowed combinations for automatic postings.
  
  
  Test with Different Combinations: If possible, try using different account combinations to see if the error persists. This can help identify if the issue is with specific accounts.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB50 (for general ledger postings), F-02 (for manual postings), and others that may be relevant to your posting scenario.
  SAP Notes: Check for any SAP Notes related to the FMCU020 error message, as they may provide additional insights or patches that could resolve the issue.
  User Exits and BAdIs: If custom logic is involved in the posting process, review any user exits or BAdIs that may affect the posting behavior.
  
  By following these steps, you should be able to identify the cause of the FMCU020 error and implement a solution to resolve it.