How To Fix RAP_DESIGNTIME005 - Only master ETag fields are supported in draft scenarios

SAP Error Message - Details

• Message type: E = Error

• Message class: RAP_DESIGNTIME - RAP Designtime Messages

• Message number: 005

• Message text: Only master ETag fields are supported in draft scenarios

What causes this issue?

Only master ETag fields which are part of the entity itself are
currently supported in draft scenarios. Fields of another entity
(syntax: etag dependent) must not be used.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RAP_DESIGNTIME005 - Only master ETag fields are supported in draft scenarios ?

  The SAP error message RAP_DESIGNTIME005 indicates that there is an issue related to the use of ETag fields in draft scenarios within the SAP RAP (Rapid Application Programming) model. This error typically arises when you are trying to use non-master ETag fields in a draft-enabled entity, which is not supported.
  Cause:
  In the context of SAP RAP, ETags (Entity Tags) are used for optimistic concurrency control. They help manage changes to data in scenarios where multiple users might be accessing and modifying the same data simultaneously. The error message suggests that only master ETag fields are allowed in draft scenarios, meaning that any attempt to use non-master ETag fields will trigger this error.
  Solution:
  To resolve this error, you should ensure that you are only using master ETag fields in your draft-enabled entities. Here are some steps you can take:
  
  
  Review Your Entity Definition: Check the definition of your draft-enabled entity and ensure that you are using the correct ETag fields. Only master ETags should be included.
  
  
  Modify the ETag Fields: If you have defined non-master ETag fields, you will need to remove them or replace them with master ETag fields that comply with the draft scenario requirements.
  
  
  Check the Draft Configuration: Ensure that your draft configuration is set up correctly. This includes verifying that the draft-enabled entity is properly defined in your RAP model.
  
  
  Consult Documentation: Refer to the official SAP documentation for RAP and draft scenarios to understand the requirements and limitations regarding ETags.
  
  
  Testing: After making the necessary changes, test your application to ensure that the error is resolved and that the draft functionality works as expected.
  
  
  Related Information:
  
  RAP Model: The RAP model is designed to simplify the development of business applications in SAP S/4HANA. It provides a framework for building applications that can leverage the capabilities of the underlying database and business logic.
  Draft Handling: Draft handling in RAP allows users to create and edit data without immediately committing changes to the database. This is particularly useful in scenarios where users may want to make multiple changes before saving.
  ETags: ETags are used in RESTful APIs and OData services to manage data consistency and concurrency. They help ensure that updates to data are based on the most recent version of the data.
  
  By following the above steps and understanding the context of the error, you should be able to resolve the issue effectively.