How To Fix RSODP_ABAP_CDS328 - Error reading CDC annotations: multiple #MAIN tables specified

SAP Error Message - Details

• Message type: E = Error

• Message class: RSODP_ABAP_CDS -

• Message number: 328

• Message text: Error reading CDC annotations: multiple #MAIN tables specified

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 RSODP_ABAP_CDS328 - Error reading CDC annotations: multiple #MAIN tables specified ?

  The SAP error message RSODP_ABAP_CDS328 indicates that there is an issue with reading Core Data Services (CDS) annotations due to multiple #MAIN tables being specified in the CDS view definition. This error typically arises when the CDS view is trying to define a main entity but encounters more than one table marked as #MAIN, which is not allowed.
  Cause:
  
  Multiple #MAIN Annotations: In a CDS view, you can only have one main entity defined using the @AbapCatalog.sqlViewName and @AbapCatalog.compiler.compareFilter annotations. If there are multiple tables or entities marked with #MAIN, the system cannot determine which one to treat as the primary entity.
  Incorrect CDS View Definition: The CDS view might be incorrectly defined, leading to ambiguity in the main entity.
  
  Solution:
  
  
  Review the CDS View Definition: Check the CDS view definition for any #MAIN annotations. Ensure that only one table is marked as the main entity. You can do this by:
  
  Opening the CDS view in the ABAP Development Tools (ADT) or SE11.
  Looking for the @AbapCatalog.sqlViewName annotation and ensuring that it is only applied to one entity.
  
  
  
  Modify the CDS View: If you find multiple #MAIN annotations, you will need to modify the CDS view to ensure that only one entity is designated as the main entity. Remove or comment out the #MAIN annotation from the other entities.
  
  
  Check for Inheritance: If your CDS view is inheriting from another view, ensure that the parent view does not have conflicting #MAIN annotations.
  
  
  Activate the CDS View: After making the necessary changes, activate the CDS view to ensure that the changes take effect.
  
  
  Test the CDS View: After activation, test the CDS view to confirm that the error has been resolved.
  
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. It allows for the creation of views that can be consumed by various applications.
  Annotations: Annotations in CDS views provide metadata that can influence how the view is processed and displayed. The #MAIN annotation is used to specify the main entity in a view.
  SAP Documentation: For more detailed information, refer to the official SAP documentation on CDS views and annotations, which provides guidelines on how to properly define and use them.
  
  If you continue to experience issues after following these steps, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.