How To Fix NRSCNV351 - Data type of char. &1 replacing char. &2 as key field is different

SAP Error Message - Details

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 351

• Message text: Data type of char. &1 replacing char. &2 as key field is different

What causes this issue?

You are trying to replace a key field.

System Response

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

How to fix this error?

If one of these requirements is not met, adjust the operation
accordingly or select another characteristic 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 NRSCNV351 - Data type of char. &1 replacing char. &2 as key field is different ?

  The SAP error message NRSCNV351 indicates that there is a data type mismatch between two character fields that are being used as key fields in a conversion or data migration process. This typically occurs when you are trying to map or convert data from one structure to another, and the fields involved have different data types or lengths.
  Cause:
  
  Data Type Mismatch: The error arises when the source and target fields have different data types (e.g., one is a CHAR and the other is a VARCHAR) or different lengths.
  Inconsistent Field Definitions: The field definitions in the source and target structures may not match, leading to this error during data processing.
  Configuration Issues: Incorrect configuration in the data migration or conversion settings can lead to this mismatch.
  
  Solution:
  
  Check Field Definitions: Review the data dictionary (SE11) for both the source and target structures to ensure that the fields being mapped have the same data type and length.
  Adjust Data Types: If necessary, modify the data types or lengths of the fields in either the source or target structure to ensure they match.
  Data Mapping: If you are using a data migration tool (like LSMW or SAP Data Services), check the mapping configuration to ensure that the fields are correctly mapped and that their data types are compatible.
  Testing: After making changes, perform a test run of the data migration or conversion process to ensure that the error is resolved.
  Consult Documentation: Refer to SAP documentation or notes related to the specific transaction or tool you are using for additional guidance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SE11 (Data Dictionary), SE37 (Function Module), or LSMW (Legacy System Migration Workbench) to investigate and resolve the issue.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Data Migration Tools: Familiarize yourself with the data migration tools and their configuration settings, as they often have specific requirements for data types and mappings.
  
  By following these steps, you should be able to identify and resolve the NRSCNV351 error in your SAP environment.