How To Fix /SAPAPO/DMRES129 - Dimension cannot be changed; resource is used in models

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/DMRES -

• Message number: 129

• Message text: Dimension cannot be changed; resource is used in models

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 /SAPAPO/DMRES129 - Dimension cannot be changed; resource is used in models ?

  The SAP error message /SAPAPO/DMRES129 indicates that a dimension of a resource cannot be changed because the resource is currently being used in one or more models. This is a common issue in SAP Advanced Planning and Optimization (APO) when trying to modify resource attributes that are linked to existing planning models.
  Cause:
  The error occurs because:
  
  The resource is actively being utilized in planning models, such as production planning or demand planning.
  Changing the dimension of the resource could affect the integrity of the models that rely on it.
  The system has constraints in place to prevent changes that could lead to inconsistencies in planning data.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Identify Usage: Determine where the resource is being used. You can check the models, planning books, or any other areas where the resource is referenced.
  
  
  Remove Resource from Models: If possible, remove the resource from the models where it is being used. This may involve:
  
  Deleting or deactivating the resource in the planning models.
  Adjusting the planning books or data views that reference the resource.
  
  
  
  Change the Dimension: Once the resource is no longer in use, you can proceed to change the dimension as needed.
  
  
  Reassign Resource: After making the necessary changes, you can reassign the resource to the models if required.
  
  
  Check for Dependencies: Ensure that there are no other dependencies or references to the resource that could cause issues when changing dimensions.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/RES01 (Resource Maintenance) to view and manage resources.
  Documentation: Refer to SAP Help documentation for detailed guidelines on resource management in APO.
  Testing: After making changes, it’s advisable to test the models to ensure that they function correctly with the updated resource dimensions.
  Backup: Always consider backing up your models or configurations before making significant changes to avoid data loss.
  
  If you continue to face issues, it may be beneficial to consult with your SAP Basis or APO support team for further assistance.