How To Fix DMU129 - Relationship between &1 and &2 will be deleted the next time you save

SAP Error Message - Details

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 129

• Message text: Relationship between &1 and &2 will be deleted the next time you save

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 DMU129 - Relationship between &1 and &2 will be deleted the next time you save ?

  The SAP error message DMU129 indicates that there is a relationship between two objects (denoted as &1 and &2) that is set to be deleted the next time you save your changes. This typically occurs in the context of data modeling or master data management within SAP systems, particularly when using tools like the Data Migration Workbench or similar applications.
  Cause:
  
  Inconsistent Data Relationships: The relationship between the two objects may be inconsistent or invalid due to changes in the underlying data model or business rules.
  Manual Deletion: A user may have manually marked the relationship for deletion, either intentionally or accidentally.
  Data Model Changes: Changes in the data model or structure that affect how objects relate to each other can trigger this message.
  Configuration Issues: There may be configuration settings that dictate how relationships are managed, leading to automatic deletion of certain relationships.
  
  Solution:
  
  Review Relationships: Check the relationship between the two objects to understand why it is being marked for deletion. Look for any inconsistencies or issues that need to be resolved.
  Restore Relationship: If the deletion was not intended, you can restore the relationship by re-establishing it in the system before saving.
  Check Configuration: Review the configuration settings related to data relationships to ensure they are set up correctly and align with your business requirements.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on managing relationships in the context of your application.
  Testing: If you are in a development or testing environment, try to replicate the issue to understand the conditions under which the relationship is marked for deletion.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using specific transaction codes related to data modeling or master data management (e.g., MDG, DMC).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  By following these steps, you should be able to identify the cause of the DMU129 error message and take appropriate action to resolve it.