How To Fix OM121 - Enter account assignment

SAP Error Message - Details

• Message type: E = Error

• Message class: OM - Customizing Materialwirtschaft

• Message number: 121

• Message text: Enter account assignment

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message OM121 - Enter account assignment ?

  The SAP error message OM121 ("Enter account assignment") typically occurs in the context of controlling (CO) or financial accounting (FI) when a user attempts to post a transaction that requires an account assignment, but the necessary account assignment information is missing. This can happen in various scenarios, such as when creating a purchase order, posting an invoice, or entering a journal entry.
  Cause:
  The error is usually caused by one of the following reasons:
  
  Missing Account Assignment: The transaction requires an account assignment (e.g., cost center, internal order, project, etc.), but it has not been provided.
  Incorrect Configuration: The configuration settings in the system may not be set up correctly to allow for the required account assignment.
  Document Type Restrictions: Certain document types may require specific account assignments that are not being fulfilled.
  User Role/Authorization Issues: The user may not have the necessary permissions to enter account assignment information.
  
  Solution:
  To resolve the OM121 error, you can take the following steps:
  
  
  Check Required Fields: Ensure that all mandatory fields for account assignment are filled in. This may include:
  
  Cost Center
  Internal Order
  Profit Center
  WBS Element (for project-related transactions)
  
  
  
  Review Document Type Settings: Check the configuration for the document type you are using to ensure that it allows for the necessary account assignments.
  
  
  Validate Configuration: If you have access to configuration settings, verify that the account assignment categories are correctly set up in the relevant modules (e.g., CO, FI).
  
  
  User Authorization: Ensure that the user has the necessary authorizations to enter account assignment information. This may require coordination with your SAP security team.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to the transaction you are attempting to perform.
  
  
  Testing: If changes are made to configuration or user roles, conduct tests to ensure that the issue is resolved.
  
  
  Related Information:
  
  
  Transaction Codes: The error can occur in various transaction codes, such as:
  
  ME21N (Create Purchase Order)
  FB60 (Enter Incoming Invoice)
  F-02 (General Journal Entry)
  
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  
  Support: If the issue persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.
  
  
  By following these steps, you should be able to identify and resolve the cause of the OM121 error in SAP.