How To Fix DMU137 - Relationship type &1 does not allow any links bewteen node type &2 and &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 137

• Message text: Relationship type &1 does not allow any links bewteen node type &2 and &3

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 DMU137 - Relationship type &1 does not allow any links bewteen node type &2 and &3 ?

  The SAP error message DMU137 indicates that there is an issue with the relationship type defined in the Data Modeler (DM) when trying to create a link between two node types. Specifically, it means that the relationship type you are trying to use does not permit links between the specified node types.
  Cause:
  
  Invalid Relationship Type: The relationship type you are trying to use does not support the combination of the two node types you are attempting to link.
  Configuration Issues: The configuration of the relationship types in the Data Model may not have been set up correctly to allow the desired connections.
  Data Model Constraints: There may be constraints defined in the data model that restrict certain types of relationships between node types.
  
  Solution:
  
  
  Check Relationship Type Configuration:
  
  Go to the Data Modeler and check the configuration of the relationship type (&1). Ensure that it is set up to allow links between the specified node types (&2 and &3).
  If necessary, modify the relationship type to include the desired node types.
  
  
  
  Use a Different Relationship Type:
  
  If the current relationship type does not support the link, consider using a different relationship type that does allow connections between the two node types.
  
  
  
  Review Node Type Definitions:
  
  Ensure that the definitions of the node types (&2 and &3) are correct and that they are intended to be linked. Check for any restrictions or conditions that may prevent linking.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on relationship types and node types in the Data Modeler. This can provide insights into how to properly configure relationships.
  
  
  
  Testing:
  
  After making changes, test the relationship again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Data Modeler Documentation: Review the official SAP documentation for the Data Modeler to understand the rules and configurations for relationship types and node types.
  Community Forums: Consider searching or posting in SAP community forums for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.