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

SAP Term: RAP locking

• Component: BC-ESI-RAP

• Component Name: RESTful ABAP Programming Model

• Description: Locking mechanism that is based on the SAP lock concept. It uses lock function modules for pessimistic concurrency control.

Smart SAP Assistant

• Key Concepts: 
  RAP locking is a feature of the BC-ESI-RAP RESTful ABAP Programming Model. It is a mechanism that ensures that only one user can modify a particular resource at any given time. This prevents conflicts between users who are trying to modify the same resource simultaneously. 
  
  How to use it: 
  When a user wants to modify a resource, they must first acquire a lock on the resource. This is done by sending an HTTP request with the “If-Match” header set to the current version of the resource. If the lock is successfully acquired, then the user can proceed with modifying the resource. When they are finished, they must release the lock by sending an HTTP request with the “If-Unmodified-Since” header set to the version of the resource when they acquired the lock. 
  
  Tips & Tricks: 
  It is important to remember to always release locks when you are finished with them. If you forget to do this, then other users will not be able to access or modify the resource until you release it. 
  
  Related Information: 
  For more information about RAP locking, please refer to SAP’s documentation on BC-ESI-RAP RESTful ABAP Programming Model.