How To Fix DMU120 - Relationship between &1 and &2 does not exist

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 120

• Message text: Relationship between &1 and &2 does not 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMU120 - Relationship between &1 and &2 does not exist ?

  The SAP error message DMU120, which states "Relationship between &1 and &2 does not exist," typically occurs in the context of Data Migration or Data Management processes within SAP systems. This error indicates that the system is unable to find a defined relationship between two specified entities (often master data or transactional data) in the system.
  Cause:
  
  Missing Relationship Definition: The most common cause is that the relationship between the two entities (e.g., materials, vendors, customers) has not been defined in the system.
  Incorrect Data Entry: There may be a typo or incorrect data entry that leads to the system not recognizing the relationship.
  Data Migration Issues: If you are migrating data, the necessary relationships may not have been established in the target system.
  Configuration Issues: The configuration settings in the system may not support the relationship you are trying to establish.
  
  Solution:
  
  Check Relationship Definitions: Verify that the relationship between the two entities is defined in the system. This can often be done through transaction codes related to master data management or configuration settings.
  Correct Data Entry: Ensure that the data for both entities is entered correctly and matches the expected formats and values.
  Data Migration Review: If this error occurs during data migration, review the migration mapping and ensure that all necessary relationships are included in the migration process.
  Configuration Settings: Review the configuration settings in the relevant modules (e.g., Material Management, Customer Relationship Management) to ensure that the relationships are supported.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the entities involved and their relationships.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes to check or define relationships, such as MM01 for material master data or BP for business partner data.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Support: If the issue persists, 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 DMU120 error and implement a solution to resolve it.