Message type: E = Error
Message class:  RSCOPY - Data Flow Copy 
Message number: 023
Message text: Replacements in the technical object name must be different
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The SAP error message RSCOPY023, which states "Replacements in the technical object name must be different," typically occurs during the process of copying or replacing technical objects in SAP, such as when working with data in the SAP BW (Business Warehouse) environment. This error indicates that there is an issue with the naming of the technical objects involved in the operation.
Cause: The error is triggered when the system detects that the replacements specified for the technical object names are not unique. This means that the source and target names for the objects you are trying to copy or replace are either the same or conflict in a way that does not allow for a proper distinction between them.
Solution: To resolve the RSCOPY023 error, you can follow these steps: Check Object Names: Review the technical object names you are trying to copy or replace. Ensure that the names you are using for the replacements
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