How To Fix WU191 - Enter a valid supplier

WU191 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 191

• Message text: Enter a valid supplier

What causes this issue?

The vendor entered does not supply the material given in the
notification.

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 the possible entries to select a vendor.

Error message extract from SAP system. Copyright SAP SE.

WU191 - Details

• The SAP error message WU191, which states "Enter a valid supplier," typically occurs in the context of procurement or vendor management within the SAP system. This error indicates that the system cannot find a valid supplier based on the input provided. Here are some common causes, solutions, and related information for this error:
  Causes:
  
  Invalid Supplier Number: The supplier number entered may not exist in the system or may have been entered incorrectly (e.g., typos, incorrect format).
  Inactive Supplier: The supplier may be inactive or blocked in the system, preventing transactions from being processed.
  Missing Master Data: The supplier master data may not be fully maintained, leading to the inability to recognize the supplier.
  Authorization Issues: The user may not have the necessary permissions to view or select the supplier.
  Data Synchronization Issues: If the supplier data is maintained in a different system (e.g., a legacy system), there may be synchronization issues.
  
  Solutions:
  
  Verify Supplier Number: Double-check the