How To Fix RSDS186 - Delta field &1 is not a selection field

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 186

• Message text: Delta field &1 is not a selection field

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 RSDS186 - Delta field &1 is not a selection field ?

  The SAP error message RSDS186 indicates that a delta field specified in a delta process is not recognized as a selection field. This typically occurs in the context of data extraction from SAP systems, particularly when working with DataSources in SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error can arise due to several reasons:
  
  Field Configuration: The field you are trying to use as a delta field is not configured as a selection field in the DataSource. Delta fields must be defined in a way that allows them to be used for delta extraction.
  DataSource Definition: The DataSource may not have been properly defined or activated. If the DataSource is not set up correctly, it may not recognize certain fields as valid for delta processing.
  Field Type: The field type of the delta field may not be compatible with the requirements for delta extraction.
  Missing or Incorrect Delta Logic: The delta logic may not be correctly implemented, leading to the system not recognizing the field as a valid selection field.
  
  Solution:
  To resolve the RSDS186 error, you can take the following steps:
  
  
  Check DataSource Configuration:
  
  Go to the DataSource in the SAP BW system and check the field definitions.
  Ensure that the delta field is marked as a selection field. You can do this in the DataSource maintenance transaction (e.g., RSA1).
  
  
  
  Activate the DataSource:
  
  If you have made changes to the DataSource, ensure that you activate it again. This can be done in the DataSource maintenance area.
  
  
  
  Review Field Properties:
  
  Check the properties of the delta field to ensure it is of the correct type and is set up to be used in delta processing.
  
  
  
  Check Delta Logic:
  
  Review the delta logic implemented for the DataSource. Ensure that it is correctly defined and that the delta field is included in the logic.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific DataSource you are working with. There may be specific requirements or known issues that could provide additional insights.
  
  
  
  Testing:
  
  After making the necessary changes, perform a test extraction to verify that the error has been resolved.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) and RSO2 (DataSource Maintenance) to manage and configure DataSources.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engaging with the SAP Community forums can also provide insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the RSDS186 error in your SAP environment.