How To Fix RSDMD280 - UUID charact. &1: Duplicate external key &2 of record &3 in package

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDMD - Messages for master data

• Message number: 280

• Message text: UUID charact. &1: Duplicate external key &2 of record &3 in package

What causes this issue?

The external key &V2& in record &V3& of the UUID characteristic &V1& is
already assigned to record &V4& in the current data package.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Assign a different external key value.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDMD280 - UUID charact. &1: Duplicate external key &2 of record &3 in package ?

  The SAP error message RSDMD280 indicates that there is a duplicate external key in a data package when working with data models in SAP BW (Business Warehouse). This error typically occurs during the data loading process when the system encounters multiple records with the same external key, which is not allowed.
  Cause:
  
  Duplicate External Keys: The primary cause of this error is that the data being loaded contains multiple records with the same external key. In SAP BW, each record must have a unique identifier to ensure data integrity.
  Data Source Issues: The source system might be sending duplicate records, or there might be an issue with the transformation logic that is not handling duplicates correctly.
  Incorrect Data Preparation: If the data has not been properly cleaned or deduplicated before loading into SAP BW, this can lead to duplicates.
  
  Solution:
  
  Identify Duplicates: Check the source data for duplicates. You can do this by querying the data source or using tools like Excel or SQL to find records with the same external key.
  Data Cleansing: Remove or consolidate duplicate records in the source system or during the ETL (Extract, Transform, Load) process. Ensure that the transformation logic is set up to handle duplicates appropriately.
  Adjust Data Load Settings: If applicable, adjust the data load settings in SAP BW to handle duplicates. This might involve changing the update mode or using a different data load method.
  Check Transformation Rules: Review the transformation rules in the Data Transfer Process (DTP) to ensure they are correctly set up to handle the incoming data.
  Error Handling: Implement error handling in your data load process to catch and log duplicates, allowing for easier troubleshooting in the future.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to analyze the data model and check for issues.
  Data Source Monitoring: Use transaction RSMO to monitor data loads and check for errors.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Refer to SAP BW documentation for best practices on data loading and handling duplicates.
  
  By following these steps, you should be able to resolve the RSDMD280 error and ensure that your data loading process runs smoothly without encountering duplicate external keys.