How To Fix DMC_RT_GEN136 - Can't generate runtime object;structure &1 not mapped to any src. struct.

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_GEN - DMC: Nachrichten der Generierungfunktionen

• Message number: 136

• Message text: Can't generate runtime object;structure &1 not mapped to any src. struct.

What causes this issue?

No source structure is mapped to the target structure. The system cannot
generate the runtime object that is required to transfer data, as the
target structure would not be filled with any data during the transfer.
You can map a source structure to the target structure in the
<ZK>Structure Mapping</> area.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_RT_GEN136 - Can't generate runtime object;structure &1 not mapped to any src. struct. ?

  The SAP error message DMC_RT_GEN136 indicates that there is an issue with the mapping of a structure in the Data Migration Cockpit (DMC). Specifically, it means that the structure specified (denoted as &1 in the error message) is not mapped to any source structure. This can occur during the process of generating runtime objects for data migration.
  Cause:
  
  Missing Mapping: The structure you are trying to use in your data migration process has not been mapped to a corresponding source structure. This can happen if the mapping was not defined or if it was deleted or not saved properly.
  Incorrect Configuration: There may be a configuration issue in the DMC setup where the source structure is not correctly linked to the target structure.
  Data Model Changes: If there have been changes to the data model (e.g., changes in the source or target structures), it may lead to inconsistencies in the mapping.
  
  Solution:
  
  
  Check Mapping: Go to the Data Migration Cockpit and check the mapping configuration for the structure in question. Ensure that the structure is correctly mapped to a source structure.
  
  Navigate to the relevant migration project.
  Open the mapping section and verify that all required mappings are in place.
  
  
  
  Create or Update Mapping: If the mapping is missing, create a new mapping for the structure. If it exists but is incorrect, update it to ensure it points to the correct source structure.
  
  
  Validate Configuration: Ensure that all configurations related to the data migration project are correct. This includes checking the source and target definitions, as well as any transformation rules that may apply.
  
  
  Re-generate Runtime Objects: After making the necessary changes, try to regenerate the runtime objects. This can often resolve the issue if the mappings are now correctly defined.
  
  
  Consult Documentation: If you are unsure about the mapping process, refer to the SAP documentation or guides related to the Data Migration Cockpit for detailed instructions.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  DMC Documentation: Review the official SAP documentation for the Data Migration Cockpit, which may provide insights into common issues and best practices for mapping structures.
  Community Forums: Consider searching or posting in SAP community forums or SAP Community Network (SCN) for additional help from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the DMC_RT_GEN136 error and successfully generate the runtime object for your data migration project.