How To Fix NRSCNV387 - Data type of compound &1 replacing compound &2 is different

SAP Error Message - Details

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 387

• Message text: Data type of compound &1 replacing compound &2 is different

What causes this issue?

You want to replace a compounding InfoObject.

System Response

This is not possible. Make sure that the following requirements are met:
The data type and length of the compound to replace the previous
compound must match
The only filling method allowed is a 1:1 mapping to the previous
compound.

How to fix this error?

If any of these requirements are not met, modify the operation
accordingly or select another InfoObject as a replacement.

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 NRSCNV387 - Data type of compound &1 replacing compound &2 is different ?

  The SAP error message NRSCNV387 indicates that there is a data type mismatch between two compounds in a data conversion or migration process. Specifically, it occurs when you are trying to replace one compound with another, but the data types of the two compounds do not match. This can happen during data migration, system upgrades, or when using certain SAP tools that involve data transformation.
  Cause:
  
  Data Type Mismatch: The primary cause of this error is that the data type of the new compound (the one you are trying to replace with) is different from the data type of the existing compound.
  Inconsistent Data Definitions: The data definitions for the compounds may have been altered or not aligned properly, leading to discrepancies in data types.
  Configuration Issues: There may be configuration issues in the system that lead to incorrect mappings or definitions of the compounds.
  
  Solution:
  
  Check Data Types: Review the data types of both compounds involved in the error. Ensure that they are compatible. You can do this by checking the data dictionary (SE11) or the relevant configuration settings.
  Adjust Data Types: If the data types are indeed different, you may need to adjust the data type of the new compound to match the existing one, or vice versa, depending on the business requirements.
  Update Mappings: If you are using a data migration tool or a transformation process, ensure that the mappings are correctly defined and that they reflect the correct data types.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using, as there may be known issues or additional guidance on handling this error.
  Testing: After making changes, conduct thorough testing to ensure that the data conversion or migration process works as expected without further errors.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or others relevant to your specific SAP environment to investigate and resolve the issue.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context on data type handling in your version of SAP.
  Community Forums: Consider searching or posting in SAP community forums or support channels for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the NRSCNV387 error and implement a suitable solution.