How To Fix RS_DME_SC021 - Field number &1 has been assigned twice

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_DME_SC - Messages for Scoring

• Message number: 021

• Message text: Field number &1 has been assigned twice

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 RS_DME_SC021 - Field number &1 has been assigned twice ?

  The SAP error message RS_DME_SC021, which states "Field number &1 has been assigned twice," typically occurs in the context of Data Warehousing or when working with DataSource definitions in SAP BW (Business Warehouse). This error indicates that a field in a DataSource or InfoSource has been defined more than once, leading to a conflict.
  Cause:
  
  Duplicate Field Assignments: The most common cause of this error is that the same field has been assigned multiple times in the DataSource or InfoSource definition.
  Incorrect Mapping: During the mapping of fields from the source system to the target DataSource, a field may have been inadvertently mapped to the same target field more than once.
  Changes in DataSource: If changes were made to the DataSource or InfoSource structure, it might lead to duplicate assignments if not handled properly.
  
  Solution:
  
  Check Field Assignments: Review the DataSource or InfoSource definition to identify any duplicate field assignments. Ensure that each field is assigned only once.
  Modify the Mapping: If you find that a field is mapped multiple times, modify the mapping to ensure that each field is uniquely assigned.
  Recreate DataSource: In some cases, if the DataSource is complex and difficult to troubleshoot, it may be easier to recreate the DataSource from scratch, ensuring that fields are assigned correctly.
  Transport Requests: If the error occurs after a transport, check if the transport included changes that might have caused the duplication. You may need to adjust the transport or revert changes.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like RSA1 (Data Warehousing Workbench) to access the DataSource definitions and check for field assignments.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common errors.
  Documentation: Refer to SAP documentation on DataSource and InfoSource creation for best practices and guidelines to avoid such issues in the future.
  
  By following these steps, you should be able to resolve the RS_DME_SC021 error and ensure that your DataSource or InfoSource is correctly configured.