How To Fix M!129 - &1: &2-&3 are updated only be event &4

SAP Error Message - Details

• Message type: E = Error

• Message class: M! -

• Message number: 129

• Message text: &1: &2-&3 are updated only be event &4

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message M!129 - &1: &2-&3 are updated only be event &4 ?

  The SAP error message M!129 indicates that a certain material document or inventory management transaction is being updated incorrectly. The message typically states that the specified fields (represented by &1, &2, and &3) can only be updated by a specific event (represented by &4). This error often arises in the context of inventory management or material movements.
  Cause:
  The error usually occurs due to one of the following reasons:
  
  Incorrect Update Attempt: You are trying to update fields in a material document that are restricted to be modified only through specific events (like goods receipt, goods issue, etc.).
  Event-Driven Updates: The system is designed to ensure data integrity by allowing certain fields to be updated only through specific events. Attempting to change these fields through other means (like direct database updates or incorrect transaction codes) will trigger this error.
  Configuration Issues: There may be configuration settings in the SAP system that restrict updates to certain fields based on business rules.
  
  Solution:
  To resolve this error, consider the following steps:
  
  Identify the Event: Determine which event is responsible for updating the fields in question. This could be a goods movement, transfer posting, or another inventory-related transaction.
  Use the Correct Transaction: Ensure that you are using the appropriate transaction code to perform the update. For example, if you are trying to post a goods receipt, use the correct transaction for that purpose (e.g., MIGO).
  Check User Authorizations: Ensure that the user has the necessary authorizations to perform the intended action. Lack of proper permissions can sometimes lead to unexpected errors.
  Review Configuration: If you have access to configuration settings, review the settings related to inventory management and material documents to ensure they align with your business processes.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the error message and the events associated with the fields you are trying to update.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MIGO (Goods Movement), MB1A (Goods Withdrawal), and MB1B (Transfer Posting) that are used for inventory management.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after following these steps, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth assistance.