How To Fix WU251 - Error during supply source determination

SAP Error Message - Details

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 251

• Message text: Error during supply source determination

What causes this issue?

No source of supply could be properly assigned for the item.

Error message extract from SAP system. Copyright SAP SE.

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• What is the cause and solution for SAP error message WU251 - Error during supply source determination ?

  The SAP error message WU251, which indicates "Error during supply source determination," typically occurs during the process of determining the appropriate supply source for a material in the system. This can happen in various scenarios, such as during the creation of a purchase order, production order, or when performing a stock transfer.
  Causes of WU251 Error
  
  Missing or Incorrect Master Data: The material master data, vendor master data, or info records may be incomplete or incorrectly maintained.
  Supply Source Not Available: The system may not find any valid supply sources for the material due to various reasons, such as:
  
  No valid purchase info records.
  No valid contracts or scheduling agreements.
  The vendor is blocked or inactive.
  
  
  Configuration Issues: The configuration settings for the supply source determination process may not be set up correctly.
  Plant or Storage Location Issues: The plant or storage location may not be properly assigned or may not have the necessary data.
  MRP Settings: If the material is managed under MRP (Material Requirements Planning), incorrect MRP settings can lead to this error.
  
  Solutions to WU251 Error
  
  
  Check Master Data:
  
  Verify that the material master data is complete and correctly maintained.
  Ensure that the vendor master data is active and not blocked.
  Check the purchase info records and contracts to ensure they are valid and relevant for the material.
  
  
  
  Review Supply Source Configuration:
  
  Check the configuration settings for supply source determination in the relevant customizing settings (e.g., in SPRO).
  Ensure that the necessary settings for the supply source determination process are correctly configured.
  
  
  
  Validate Plant and Storage Location:
  
  Ensure that the plant and storage location are correctly assigned to the material.
  Check if the material is available in the specified plant and storage location.
  
  
  
  MRP Settings:
  
  Review the MRP settings for the material to ensure they are correctly configured.
  Check if the material is set up for MRP and if the relevant parameters are correctly defined.
  
  
  
  Debugging:
  
  If the issue persists, consider using transaction codes like SE80 or SE37 to debug the function module responsible for supply source determination to identify the root cause.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  
  Related Information
  
  Transaction Codes: You may use transaction codes like ME21N (Create Purchase Order), ME51N (Create Purchase Requisition), or MD04 (Stock/Requirements List) to analyze the situation further.
  SAP Documentation: Refer to SAP Help documentation for detailed information on supply source determination and related processes.
  Community Forums: Engage with SAP community forums or user groups for insights and shared experiences regarding this error.
  
  By following these steps, you should be able to identify the cause of the WU251 error and implement the necessary solutions to resolve it.