What is RAP total ETag in SAP (BC-ESI-RAP - RESTful ABAP Programming Model)?

SAP Term: RAP total ETag

• Component: BC-ESI-RAP

• Component Name: RESTful ABAP Programming Model

• Description: A field of a draft-enabled RAP BO that enables optimistic concurrency checks during the transition form draft to persistent data.

Smart SAP Assistant

• Key Concepts: 
  RAP total ETag is a component of the BC-ESI-RAP RESTful ABAP Programming Model. It is an HTTP header field that is used to identify a specific version of a resource. It is used to detect changes in the resource and prevent concurrent modifications. 
  
  How to use it: 
  When making a request to a resource, the client should include the ETag of the last version of the resource that it has seen. The server will then compare this ETag with its own version of the resource and respond with either a 200 OK status code if the versions match, or a 412 Precondition Failed status code if they do not. 
  
  Tips & Tricks: 
  When using RAP total ETag, it is important to remember that the ETag should be sent as part of the request header, not as part of the request body. This will ensure that the server can properly compare the ETag with its own version of the resource. 
  
  Related Information: 
  RAP total ETag is part of the BC-ESI-RAP RESTful ABAP Programming Model, which is an SAP programming model for creating web services using ABAP. It is based on Representational State Transfer (REST) principles and provides an easy way to create web services that are accessible from any platform or language.