How To Fix RSODSO_MPP_TEST020 - Error in Prepare. Duplicates: &1. Saved: &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSODSO_MPP_TEST - MPP Data Verification

• Message number: 020

• Message text: Error in Prepare. Duplicates: &1. Saved: &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSODSO_MPP_TEST020 - Error in Prepare. Duplicates: &1. Saved: &2 ?

  The SAP error message RSODSO_MPP_TEST020 typically occurs in the context of SAP BW (Business Warehouse) when working with DataStore Objects (DSOs) and MultiProvider queries. This error indicates that there are duplicate records being processed during the preparation phase of a query or data load.
  Cause:
  The error message Error in Prepare. Duplicates: &1. Saved: &2 suggests that the system has detected duplicate entries in the data being processed. The placeholders &1 and &2 represent the number of duplicates found and the number of records saved, respectively. This can happen due to various reasons, such as:
  
  Data Quality Issues: The source data may contain duplicates that are not being handled correctly.
  Incorrect Data Modeling: The DSO or InfoProvider may not be set up to handle duplicates properly.
  Transformation Logic: The transformation rules applied during data loading may not be filtering out duplicates as expected.
  Data Load Process: The data load process may be incorrectly configured, leading to the same records being loaded multiple times.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Source Data: Review the source data for duplicates. You can use queries or reports to identify and clean up duplicate records in the source system.
  
  
  Review DSO Settings: Ensure that the DSO is configured correctly to handle duplicates. Check the settings for key fields and data records to ensure they are defined properly.
  
  
  Adjust Transformation Logic: If you are using transformations to load data into the DSO, review the transformation rules to ensure they are set up to eliminate duplicates. You may need to add logic to filter out duplicates before they are loaded.
  
  
  Data Load Monitoring: Monitor the data load process to identify when and where duplicates are being introduced. You can use the SAP BW process chain monitoring tools to track the data load steps.
  
  
  Use DSO Activation: If applicable, ensure that the DSO is activated correctly after data is loaded. Activation can help in managing duplicates by ensuring that only unique records are stored.
  
  
  Consult SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or patches related to this error.
  
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for best practices on data modeling and handling duplicates.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) and RSCUSTV10 (to check settings) for managing and troubleshooting data loads.
  
  By following these steps, you should be able to identify the root cause of the duplicates and implement a solution to resolve the RSODSO_MPP_TEST020 error.