How To Fix WU355 - External number assignment not allowed for promotion type &

WU355 - Overview

• Message type: E = Error

• Message class: WU - Promotion management messages

• Message number: 355

• Message text: External number assignment not allowed for promotion type &

What causes this issue?

You entered a promotion number. However, external number assignment is
not possible for promotion type &V1&.

System Response

The system cannot create the promotion.

How to fix this error?

Omit the promotion number or assign an external number range in in
Customizing for <DS:SIMG.W_ZF_VK_0220>promotion type
</> &V1&.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WU355 - External number assignment not allowed for promotion type & ?

  The SAP error message WU355, which states "External number assignment not allowed for promotion type &," typically occurs in the context of promotions in SAP, particularly when dealing with the assignment of external numbers to promotion types that do not support it.
  
  Cause:
  The error arises when you attempt to assign an external number (like a number from an external numbering system) to a promotion type that is configured to only allow internal number assignment. This can happen if:
  
  The promotion type is set up in a way that does not permit external number assignment.
  There is a configuration issue in the promotion type settings.
  The system is trying to use an external number for a promotion type that is not designed to handle it.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Promotion Type Configuration:
  
  Go to the configuration settings for the promotion type in question. This can usually be found in the SAP