How To Fix DMU135 - Relationship type between &1 and &2 is not defined

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 135

• Message text: Relationship type between &1 and &2 is not defined

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 DMU135 - Relationship type between &1 and &2 is not defined ?

  The SAP error message DMU135, which states "Relationship type between &1 and &2 is not defined," typically occurs in the context of Data Management or Master Data Management (MDM) when there is an attempt to create or manage a relationship between two objects (e.g., materials, vendors, customers) that does not have a defined relationship type in the system.
  Cause:
  
  Undefined Relationship Type: The primary cause of this error is that the relationship type you are trying to use between the two specified objects (represented by &1 and &2) has not been defined in the system.
  Configuration Issues: There may be a configuration issue where the relationship types have not been properly set up in the relevant customizing settings.
  Data Integrity Issues: The data being processed may not conform to the expected structure or relationships defined in the system.
  
  Solution:
  
  
  Define Relationship Type:
  
  Go to the relevant customizing transaction (usually in the SPRO transaction) where relationship types are defined.
  Navigate to the section for defining relationship types and create a new entry for the relationship type you need between the two objects.
  Ensure that the relationship type is correctly configured with the necessary attributes.
  
  
  
  Check Existing Relationships:
  
  Review the existing relationship types to see if there is a similar relationship that can be used instead.
  If a similar relationship exists, use that instead of trying to create a new one.
  
  
  
  Data Validation:
  
  Validate the data being processed to ensure that it meets the requirements for creating relationships.
  Check for any inconsistencies or missing data that might be causing the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for guidance on how to define and manage relationship types in your specific version of SAP.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (Customizing), SE11 (Data Dictionary), and SE80 (Object Navigator) for managing data definitions and relationships.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  Training and Documentation: Consider training sessions or documentation on Master Data Management and relationship management in SAP to better understand how to configure and manage these settings.
  
  By following these steps, you should be able to address the DMU135 error and successfully define the necessary relationship types in your SAP system.