How To Fix NRSCNV388 - Length of compound &1 replacing compound &2 is different

SAP Error Message - Details

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 388

• Message text: Length 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 NRSCNV388 - Length of compound &1 replacing compound &2 is different ?

  The SAP error message NRSCNV388 indicates that there is a mismatch in the length of a compound data type during a conversion or mapping process. This typically occurs when you are working with data structures that involve compound types, such as structures or tables, and the lengths of the fields do not match as expected.
  Cause:
  The error arises when:
  
  You are trying to replace or map one compound type with another, and the lengths of the corresponding fields in the two compounds do not match.
  This can happen during data migration, data transformation, or when using certain SAP tools that involve data conversion (like SAP Data Services, LSMW, etc.).
  The mismatch could be due to changes in the data model, incorrect configuration, or errors in the mapping definitions.
  
  Solution:
  To resolve the NRSCNV388 error, you can take the following steps:
  
  
  Check Data Definitions: Review the definitions of the compound types involved (both &1 and &2 in the error message). Ensure that the lengths of the fields in both compounds match.
  
  
  Adjust Mapping: If you are using a mapping tool, check the mapping configuration. Make sure that the fields are correctly mapped and that their lengths are compatible.
  
  
  Modify Data Structures: If necessary, modify the data structures to ensure that the lengths of the fields are consistent. This may involve changing the data type definitions in the ABAP Dictionary or adjusting the structures in your data model.
  
  
  Data Migration Tools: If you are using data migration tools, ensure that the source and target structures are correctly defined and that any transformations applied do not alter the expected lengths.
  
  
  Testing: After making adjustments, perform tests to ensure that the error no longer occurs and that the data is being processed correctly.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review the documentation for the specific SAP module or tool you are using to understand how it handles compound types and data conversions.
  Community Forums: Consider searching or posting in SAP community forums or SAP Community Network (SCN) for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the NRSCNV388 error and implement a solution to resolve it.