How To Fix RSDODSO255 - Duplicate records check cannot be enabled because DSO contains data

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDODSO - Messages for ODS Objects

• Message number: 255

• Message text: Duplicate records check cannot be enabled because DSO contains data

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSDODSO255 - Duplicate records check cannot be enabled because DSO contains data ?

  The SAP error message RSDODSO255 indicates that you are trying to enable the "Duplicate Records Check" feature for a DataStore Object (DSO) that already contains data. This feature is designed to prevent the loading of duplicate records into the DSO, but it can only be activated on an empty DSO.
  Cause:
  The primary cause of this error is that the DSO you are trying to modify already has existing records. The Duplicate Records Check feature cannot be enabled on a DSO that contains data because it would require a validation of existing records, which could lead to inconsistencies or data integrity issues.
  Solution:
  To resolve this issue, you have a couple of options:
  
  
  Delete Existing Data:
  
  If the existing data in the DSO is not needed, you can delete all records from the DSO. This can be done using the Data Warehousing Workbench or through a data deletion process.
  After deleting the data, you can then enable the Duplicate Records Check feature.
  
  
  
  Create a New DSO:
  
  If you need to keep the existing data, consider creating a new DSO with the Duplicate Records Check enabled from the start. You can then load data into this new DSO while ensuring that duplicates are checked.
  
  
  
  Data Cleansing:
  
  If you want to keep the existing data and still enable the Duplicate Records Check, you may need to cleanse the data first. This involves identifying and removing duplicates from the existing records before enabling the feature.
  
  
  
  Related Information:
  
  Data Integrity: Enabling the Duplicate Records Check is crucial for maintaining data integrity, especially in scenarios where data is frequently loaded from various sources.
  Performance Considerations: Be aware that enabling this feature may have performance implications during data loading, as the system will need to check for duplicates.
  Documentation: Refer to SAP documentation for specific steps on how to delete data from a DSO or how to create a new DSO. The SAP Help Portal and SAP Community are good resources for additional guidance.
  
  Steps to Delete Data from DSO:
  
  Go to the Data Warehousing Workbench (transaction code RSA1).
  Navigate to the DataStore Object in question.
  Right-click on the DSO and select "Manage."
  Use the "Delete" option to remove all records from the DSO.
  
  Steps to Enable Duplicate Records Check:
  
  After ensuring the DSO is empty, go to the DSO settings.
  Find the option for "Duplicate Records Check" and enable it.
  Save your changes.
  
  By following these steps, you should be able to resolve the RSDODSO255 error and successfully enable the Duplicate Records Check feature for your DSO.