How To Fix WG004 - Supplier/supplying plant missing. Supply source will be determined

SAP Error Message - Details

• Message type: E = Error

• Message class: WG - Messages for store order and investment buy

• Message number: 004

• Message text: Supplier/supplying plant missing. Supply source will be determined

What causes this issue?

No supplier or supplying plant was specified in the purchase order.

System Response

A supplier is determined by source determination.

How to fix this error?

If known, enter the supplier or supplying plant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WG004 - Supplier/supplying plant missing. Supply source will be determined ?

  Certainly! Here's a detailed explanation for the SAP error message WG004 - Supplier/supplying plant missing. Supply source will be determined:
  
  Error Message:
  WG004 - Supplier/supplying plant missing. Supply source will be determined
  
  Cause:
  This message occurs during the procurement or material planning process when the system attempts to determine the supply source for a material but cannot find a directly assigned supplier or supplying plant in the material master or source list.
  Specifically:
  
  The system is trying to find a source of supply for a material (e.g., during MRP run, purchase requisition creation, or stock transfer).
  No fixed source of supply (such as a vendor or supplying plant) is maintained in the material master or source list.
  The system therefore cannot directly assign a supplier or plant and will try to determine the source dynamically based on other criteria.
  
  
  When does it occur?
  
  During MRP (Material Requirements Planning) when the system tries to create planned orders or purchase requisitions.
  When creating purchase requisitions or purchase orders without a fixed source of supply.
  When the material master or source list does not have a valid supplier or supplying plant assigned.
  
  
  Solution:
  
  
  Maintain Source List:
  
  Go to transaction ME01 (Maintain Source List).
  Assign a valid source of supply (vendor or supplying plant) for the material and plant combination.
  Ensure the source list entry is valid for the relevant dates and marked as fixed if necessary.
  
  
  
  Maintain Info Record:
  
  Use transaction ME11 to create or update the purchasing info record for the vendor and material.
  This helps the system identify the supplier for the material.
  
  
  
  Maintain Material Master Data:
  
  Check the material master (MM02) for the relevant plant.
  Ensure that the MRP 2 view has the correct MRP type and special procurement settings.
  If the material is procured externally, ensure the procurement type is set to 'F' (External procurement).
  
  
  
  Check Special Procurement Key:
  
  If the material is supplied from another plant (stock transfer), ensure the special procurement key is maintained in the material master.
  This key defines the supplying plant.
  
  
  
  Use Source Determination:
  
  If no fixed source is maintained, the system will try to determine the source dynamically.
  This can be controlled via configuration in the Material Requirements Planning settings or by maintaining source lists.
  
  
  
  Check Plant Parameters:
  
  Verify plant-specific parameters in OMI4 or related customizing to ensure source determination is set up correctly.
  
  
  
  
  Additional Information:
  
  This message is often informational but can lead to delays or errors if the system cannot find a source.
  Fixing the source list and info records usually resolves the issue.
  If multiple sources exist, the system will pick the best source based on priority and validity.
  In some cases, the message can be suppressed if dynamic source determination is acceptable.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  No fixed supplier or supplying plant assigned for the material in the source list or material master.
  
  
  Solution
  Maintain source list entries, info records, and material master data to assign a supplier or supplying plant.
  
  
  Transaction Codes
  ME01 (Source List), ME11 (Info Record), MM02 (Material Master)
  
  
  Related Config
  MRP settings, special procurement keys, plant parameters
  
  
  
  
  If you need help with specific steps or transactions, feel free to ask!