How To Fix DMC_RT_GEN002 - No foreign key relations were maintained for structure &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_GEN - DMC: Nachrichten der Generierungfunktionen

• Message number: 002

• Message text: No foreign key relations were maintained for structure &1.

What causes this issue?

For the indicated structure no foreign key relations to the superior
structure have been cultivated.

System Response

Generation has been stopped.

How to fix this error?

Define your foreign key relations.

Procedure for System Administrators

None

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_GEN002 - No foreign key relations were maintained for structure &1. ?

  The SAP error message DMC_RT_GEN002 indicates that there are no foreign key relations maintained for a specific structure in the Data Migration Cockpit (DMC). This error typically arises when you are trying to perform data migration tasks, and the system cannot find the necessary foreign key relationships that are required for the data being processed.
  Cause:
  
  
  Missing Foreign Key Relationships: The primary cause of this error is that the structure you are working with does not have any defined foreign key relationships in the database. This can happen if the data model is not properly set up or if the necessary relationships were not defined during the configuration of the data model.
  
  
  Incorrect Configuration: If the data migration structure is not correctly configured to reflect the relationships between different entities, this error can occur.
  
  
  Data Model Changes: If there have been recent changes to the data model (e.g., new tables or structures added) and the foreign key relationships were not updated accordingly, this error may arise.
  
  
  Solution:
  
  
  Define Foreign Key Relationships: 
  
  Go to the Data Dictionary (transaction SE11) and check the structure mentioned in the error message.
  Ensure that the necessary foreign key relationships are defined for the structure. If they are missing, you will need to create them.
  
  
  
  Check Data Migration Configuration:
  
  Review the configuration settings in the Data Migration Cockpit to ensure that the data model is correctly set up.
  Make sure that the mapping of fields and relationships is correctly defined.
  
  
  
  Consult Documentation: 
  
  Refer to the SAP documentation for the Data Migration Cockpit to understand the requirements for foreign key relationships and how to set them up.
  
  
  
  Testing: 
  
  After making the necessary changes, test the data migration process again to see if the error persists.
  
  
  
  Seek Help from SAP Support: 
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance. They can provide guidance based on the specific context of your implementation.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), and DMC-related transactions for data migration.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance on setting up foreign key relationships.
  Data Migration Cockpit: Familiarize yourself with the Data Migration Cockpit and its functionalities, as well as best practices for data migration in SAP.
  
  By addressing the foreign key relationship issue, you should be able to resolve the DMC_RT_GEN002 error and proceed with your data migration tasks.