How To Fix MW336 - Either carry out supply source determination or select supplier

MW336 - Overview

• Message type: E = Error

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

• Message number: 336

• Message text: Either carry out supply source determination or select supplier

What causes this issue?

You selected automatic supply source determination and manually entered
the source of supply.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use an alternative.
If you want to enter the source of supply manually, you must enter a
vendor or a plant.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW336 - Either carry out supply source determination or select supplier ?

  The SAP error message MW336 ("Either carry out supply source determination or select supplier") typically occurs in the context of procurement processes, particularly when trying to create a purchase order or a purchase requisition. This error indicates that the system is unable to determine a valid source of supply for the materials or services you are trying to procure.
  
  Cause:
  
  
  Missing Source of Supply: The system cannot find a valid supplier for the material or service you are trying to procure. This could be due to:
  
  No valid purchasing info record for the material and vendor combination.
  No valid source list entry for the material.
  The material is not assigned to any vendor in the system.
  
  
  
  Incomplete Master Data: The material master or vendor master data may be incomplete or not properly maintained.
  
  
  Source List Configuration: If a source list is required for the material, it may not be configured correctly or may not contain any valid