How To Fix MW279 - Assignment error: alloc. rule & not fixed

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 279

• Message text: Assignment error: alloc. rule & not fixed

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 MW279 - Assignment error: alloc. rule & not fixed ?

  The SAP error message MW279, which states "Assignment error: alloc. rule & not fixed," typically occurs in the context of inventory management or material management when there is an issue with the allocation rules for stock or materials. This error can arise during various processes, such as goods movements, stock transfers, or inventory postings.
  Cause:
  The error is generally caused by one of the following issues:
  
  
  Allocation Rule Not Defined: The allocation rule for the material or stock type is not defined or is incorrectly configured in the system.
  
  
  Material Master Data Issues: The material master data may not have the necessary settings for allocation rules, or the settings may not be consistent with the transaction being performed.
  
  
  Stock Type Issues: The stock type being used may not be compatible with the allocation rules defined in the system.
  
  
  Configuration Issues: There may be configuration issues in the system related to inventory management or material management that prevent the allocation rules from being applied correctly.
  
  
  Solution:
  To resolve the MW279 error, you can take the following steps:
  
  
  Check Allocation Rules:
  
  Go to the configuration settings in SAP (Transaction code SPRO).
  Navigate to the relevant area for inventory management or material management.
  Verify that the allocation rules are defined correctly for the material and stock type in question.
  
  
  
  Review Material Master Data:
  
  Use transaction code MM03 to display the material master data.
  Check the relevant views (e.g., Basic Data, Purchasing, Sales, etc.) to ensure that the allocation rules are set correctly.
  
  
  
  Check Stock Types:
  
  Ensure that the stock type you are trying to use is compatible with the allocation rules defined in the system.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to allocation rules and inventory management for any specific requirements or configurations that may be missing.
  
  
  
  Test with Different Materials:
  
  If possible, test the process with different materials to see if the issue is isolated to a specific material or if it is a broader configuration issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, especially if it appears to be a system bug or a more complex configuration issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), MM02 (Change Material), and SPRO (Customizing).
  SAP Notes: Check for any SAP Notes related to MW279 or allocation rules that may provide additional insights or patches.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the MW279 error in your SAP system.