How To Fix /SCWM/UI_DIFF029 - Function not possible; at least one difference is already blocked

/SCWM/UI_DIFF029 - Overview

• Message type: E = Error

• Message class: /SCWM/UI_DIFF -

• Message number: 029

• Message text: Function not possible; at least one difference is already blocked

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/UI_DIFF029 - Function not possible; at least one difference is already blocked ?

  The SAP error message /SCWM/UI_DIFF029 Function not possible; at least one difference is already blocked typically occurs in the context of the SAP Extended Warehouse Management (EWM) module. This error indicates that an operation you are trying to perform on a difference (such as a stock difference or inventory discrepancy) cannot be completed because that difference has already been blocked for some reason.
  
  Cause:
  
  Blocked Differences: The specific difference you are trying to process is already marked as blocked. This could happen if another user or process has already taken action on that difference, or if the system has automatically blocked it due to certain conditions (e.g., validation errors, pending approvals).
  Concurrency Issues: If multiple users are trying to process the same difference simultaneously, one of the actions may block the other.
  System Configuration: Certain configurations in the EWM system may lead to differences being automatically blocked based on business rules or workflows.
  
  
  Solution:
  
  Check Blocked