How To Fix R3105 - Error when assigning transfer structure & to IDoc type &

SAP Error Message - Details

• Message type: E = Error

• Message class: R3 - Service API messages

• Message number: 105

• Message text: Error when assigning transfer structure & to IDoc type &

What causes this issue?

An error occurred while adding the transfer structure &V1& in IDoc type
&V2& to source system &V3&.

System Response

The action was terminated. Data changes were undone.

How to fix this error?

Check the SAP Support Portal for the appropriate Notes and create a
customer message if necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message R3105 - Error when assigning transfer structure & to IDoc type & ?

  The SAP error message R3105, which states "Error when assigning transfer structure & to IDoc type &," typically occurs when there is an issue with the mapping between the IDoc type and the transfer structure in the SAP system. This can happen for various reasons, including configuration issues, missing or incorrect definitions, or inconsistencies in the data model.
  Causes:
  
  Missing Transfer Structure: The transfer structure that you are trying to assign to the IDoc type may not exist or may not be correctly defined.
  Inconsistent Data Types: The data types or lengths defined in the transfer structure may not match those expected by the IDoc type.
  Incorrect Configuration: There may be an error in the configuration settings for the IDoc type or the transfer structure.
  Transport Issues: If the IDoc type or transfer structure was recently transported from another system, there may be inconsistencies or missing components.
  Authorization Issues: Lack of proper authorizations to access or modify the transfer structure or IDoc type.
  
  Solutions:
  
  Check Transfer Structure: Verify that the transfer structure exists and is correctly defined. You can do this by navigating to the relevant transaction (e.g., WE30 for IDoc types and WE31 for transfer structures).
  Validate Data Types: Ensure that the data types and lengths in the transfer structure match those defined in the IDoc type. You may need to adjust the definitions accordingly.
  Review Configuration: Check the configuration settings for the IDoc type and transfer structure in transaction WE20 (Partner Profiles) and ensure they are correctly set up.
  Transport Check: If the issue arose after a transport, check the transport logs for any errors or missing objects. You may need to re-transport the relevant objects.
  Authorization Check: Ensure that you have the necessary authorizations to access and modify the IDoc type and transfer structure. Consult with your SAP security team if needed.
  Debugging: If the issue persists, consider debugging the process to identify the exact point of failure. This may require technical expertise.
  
  Related Information:
  
  Transaction Codes:
  
  WE30: IDoc Type Maintenance
  WE31: Data Segment Maintenance
  WE20: Partner Profile
  
  
  Documentation: Refer to SAP Help documentation for IDocs and transfer structures for detailed guidelines on configuration and troubleshooting.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further assistance.