How To Fix RSDMD502 - A data record with the same key already exists

RSDMD502 - Overview

• Message type: E = Error

• Message class: RSDMD - Messages for master data

• Message number: 502

• Message text: A data record with the same key already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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RSDMD502 - Details

• The SAP error message RSDMD502 indicates that there is an attempt to insert or update a data record in a data store (like an InfoObject or InfoProvider) that has a key which already exists. This typically occurs in the context of data loading or data modeling in SAP BW (Business Warehouse).
  
  Cause:
  
  Duplicate Key Values: The most common cause of this error is that the data being loaded contains duplicate key values that already exist in the target data store.
  Data Source Issues: The source data might have duplicates that are not being handled before the load.
  Incorrect Data Transformation: If there are transformations applied during the data load, they might not be correctly handling duplicates.
  Data Model Configuration: The configuration of the InfoObject or InfoProvider might not be set up to handle duplicates appropriately.
  
  
  Solution:
  
  Check Source Data: Review the source data for duplicates. You can use tools like Excel or SQL queries to identify duplicate