How To Fix MW162 - No allocation rule found for generation

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 162

• Message text: No allocation rule found for generation

What causes this issue?

You did not select any list item for generation of an allocation rule,
or all possible allocation rules have already been generated.

System Response

No allocation rules generated.

How to fix this error?

Select list items for which no allocation rule has yet been generated.
You can recognize these items in that they do not have an allocation
table number.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW162 - No allocation rule found for generation ?

  The SAP error message MW162 ("No allocation rule found for generation") typically occurs in the context of materials management, particularly when dealing with the allocation of stock or resources in the system. This error indicates that the system is unable to find a valid allocation rule for the specified generation, which can prevent the successful processing of certain transactions.
  Causes:
  
  Missing Allocation Rules: The most common cause is that there are no allocation rules defined for the specific material or generation in the system.
  Incorrect Configuration: The configuration settings for allocation rules may not be set up correctly, leading to the system being unable to find the necessary rules.
  Data Inconsistencies: There may be inconsistencies or missing data in the master data records related to the material or the allocation process.
  Versioning Issues: If the system is using different versions of allocation rules, it may not be able to find the correct one for the current context.
  
  Solutions:
  
  
  Define Allocation Rules: 
  
  Go to the relevant configuration settings in SAP (usually in the IMG under Logistics or Materials Management) and ensure that allocation rules are defined for the material and generation in question.
  Use transaction codes like OMW1 or OMW2 to manage allocation rules.
  
  
  
  Check Configuration:
  
  Review the configuration settings for allocation in the system to ensure they are set up correctly.
  Ensure that the allocation strategy is correctly assigned to the relevant materials.
  
  
  
  Review Master Data:
  
  Check the material master data to ensure that all necessary fields are filled out correctly and that there are no missing entries that could affect allocation.
  Use transaction code MM03 to view the material master data.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for specific details on how to set up allocation rules and troubleshoot related issues.
  
  
  
  Testing:
  
  After making changes, perform tests to ensure that the allocation rules are now being recognized by the system and that the error no longer occurs.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material) for managing material data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with 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 the cause of the MW162 error and implement a solution to resolve it.