How To Fix DMU169 - &1 is not allowed as object &2 in relationship type &3

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 169

• Message text: &1 is not allowed as object &2 in relationship type &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 DMU169 - &1 is not allowed as object &2 in relationship type &3 ?

  The SAP error message DMU169 indicates that there is an issue with the relationship type in the Data Migration Workbench (DMW) or Data Migration Utility (DMU). Specifically, the error message format is as follows:
  DMU169: &1 is not allowed as object &2 in relationship type &3
  Cause:
  This error typically occurs when there is an attempt to create or modify a relationship between two objects that are not compatible according to the defined relationship types in the system. The specific reasons for this error can include:
  
  Invalid Object Type: The object type you are trying to use in the relationship is not allowed for the specified relationship type.
  Configuration Issues: The relationship types may not be properly configured in the system, leading to restrictions on which objects can be related.
  Data Integrity Rules: There may be data integrity rules that prevent certain combinations of objects from being related.
  
  Solution:
  To resolve the DMU169 error, you can take the following steps:
  
  
  Check Object Types: Verify that the object types you are trying to relate are compatible with the specified relationship type. Refer to the documentation or configuration settings for the relationship types in your SAP system.
  
  
  Review Relationship Configuration: Check the configuration of the relationship types in the system. Ensure that the relationship type you are using allows the combination of the two object types involved.
  
  
  Consult Documentation: Look into the SAP documentation or help resources for the specific relationship type to understand the allowed object types and any constraints.
  
  
  Data Migration Workbench Settings: If you are using the Data Migration Workbench, ensure that the settings and mappings are correctly defined for the objects and relationships you are working with.
  
  
  Testing: If possible, try to create a relationship with different object types to see if the error persists. This can help isolate the issue.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with SAP experts who can provide guidance based on your specific system configuration.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to data migration and relationship management, such as LTMC (Legacy Transfer Migration Cockpit) or DMO (Database Migration Option).
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the DMU169 error and implement a solution to resolve it.