How To Fix WU539 - A different external supplier is assigned in the reference plant

WU539 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 539

• Message text: A different external supplier is assigned in the reference plant

What causes this issue?

An external vendor that differs from the external vendor for the
reference plant was found for plant &V4&, material &V2& in unit of
measure &V3&.

System Response

Price activation at plant group level may lead to incorrect results for
plant group &V1&.

How to fix this error?

You can activate prices at plant level by changing the price activation
type for plant group &V1&. To do this, change the price activation type
indicator to "Plant" in the plant group overview.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU539 - A different external supplier is assigned in the reference plant ?

  The SAP error message WU539 indicates that there is a mismatch in the external supplier assignment for a specific material in the reference plant. This typically occurs when you are trying to create or change a purchasing document (like a purchase order) and the system finds that the supplier you are trying to use is not the one assigned to the material in the specified plant.
  
  Cause:
  
  Supplier Assignment: The material in the reference plant is assigned to a different external supplier than the one you are trying to use.
  Data Inconsistency: There may be inconsistencies in the vendor master data or material master data.
  Plant-Specific Data: The supplier may not be set up for the specific plant you are working with, or the supplier may have been changed or deleted.
  
  
  Solution:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03) and check the purchasing view for the material in the reference plant.