How To Fix NRSCNV389 - Only 1:1 mapping with replaced compound is allowed

NRSCNV389 - Overview

• Message type: E = Error

• Message class: NRSCNV - Message class

• Message number: 389

• Message text: Only 1:1 mapping with replaced compound is allowed

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 NRSCNV389 - Only 1:1 mapping with replaced compound is allowed ?

  The SAP error message NRSCNV389, which states "Only 1:1 mapping with replaced compound is allowed," typically occurs during the process of data migration or conversion, particularly when dealing with the mapping of compound data types in SAP systems. This error indicates that there is an issue with how the data is being mapped from one structure to another, specifically when it involves compound types that have been replaced or modified.
  
  Cause:
  
  
  Compound Data Types: The error usually arises when there is an attempt to map a compound data type (like a structure or a table) to another compound type in a way that does not adhere to the 1:1 mapping requirement. This means that each element in the source must correspond directly to a single element in the target.
  
  
  Incorrect Mapping Configuration: If the mapping configuration is set up incorrectly, such as trying to map multiple source elements to a single target element