How To Fix /SCWM/GTS018 - Previous document number could not be changed; warehouse tasks exist

/SCWM/GTS018 - Overview

• Message type: E = Error

• Message class: /SCWM/GTS -

• Message number: 018

• Message text: Previous document number could not be changed; warehouse tasks exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

/SCWM/GTS018 - Details

• The SAP error message /SCWM/GTS018 indicates that a previous document number cannot be changed because there are existing warehouse tasks associated with it. This typically occurs in the context of warehouse management processes where certain documents (like transfer orders or delivery documents) are linked to warehouse tasks that are already created and processed.
  
  Cause:
  
  Existing Warehouse Tasks: The primary reason for this error is that there are warehouse tasks that have already been created based on the document you are trying to change. SAP does not allow changes to the document number if it would affect the integrity of the associated warehouse tasks.
  Document Status: The document may be in a status that does not allow changes, especially if it has already been processed or partially processed in the warehouse.
  System Configuration: There may be specific configurations or settings in your SAP system that prevent changes to documents with existing warehouse tasks.
  
  
  Solution:
  
  Check Warehouse Tasks: