How To Fix R1491 - Assignment for field &1 in structure &2 is not possible. No data transfer

SAP Error Message - Details

• Message type: E = Error

• Message class: R1 - Business Partner Messages from S_BUPA_GENERAL

• Message number: 491

• Message text: Assignment for field &1 in structure &2 is not possible. No data transfer

What causes this issue?

Assignment to a field symbol could not take place as field &V1& is not
in structure &V2&. This means that no data can be transferred to the
table in question.

System Response

Error message

How to fix this error?

Include field &V1& in structure &V2&.

Procedure for System Administrators

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 R1491 - Assignment for field &1 in structure &2 is not possible. No data transfer ?

  The SAP error message R1491, which states "Assignment for field &1 in structure &2 is not possible. No data transfer," typically occurs during data transfer processes, such as when you are trying to transfer data between different structures or when performing data uploads. This error indicates that there is a mismatch or incompatibility between the fields in the source and target structures.
  Causes:
  
  Field Mismatch: The field specified in the error message does not exist in the target structure or has a different data type or length.
  Incompatible Data Types: The data type of the field in the source structure does not match the data type of the corresponding field in the target structure.
  Field Length Issues: The length of the data being transferred exceeds the length defined in the target structure.
  Missing Configuration: The configuration for the data transfer might be incomplete or incorrect, leading to the inability to map fields properly.
  Custom Development Issues: If there are custom programs or enhancements involved, they may not be handling the data transfer correctly.
  
  Solutions:
  
  Check Field Definitions: Verify that the field &1 exists in the target structure &2 and that it has the same data type and length as in the source structure.
  Adjust Data Types: If there is a data type mismatch, consider converting the data in the source structure to match the target structure's requirements.
  Modify Field Lengths: Ensure that the data being transferred does not exceed the defined length of the target field. If necessary, truncate or pad the data accordingly.
  Review Data Transfer Configuration: Check the configuration settings for the data transfer process to ensure that all mappings are correctly defined.
  Debug Custom Code: If the error arises from custom code, debug the program to identify where the data transfer is failing and make necessary adjustments.
  Consult Documentation: Refer to SAP documentation or notes related to the specific transaction or process you are working with for additional guidance.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may be using transaction codes like LSMW (Legacy System Migration Workbench), BAPIs, or IDocs for data transfer.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to this error.
  Data Dictionary: Use transaction SE11 to check the definitions of the structures involved in the data transfer.
  Testing: Perform tests with sample data to isolate the issue and confirm that the changes made resolve the error.
  
  By following these steps, you should be able to identify the root cause of the R1491 error and implement a solution to resolve it.