Approach 1: ETAG mechanism
This approach is used in SAP CRM Fiori.
Suppose user Jerry has opened a given opportunity with ID = 3456 and clicked the Edit button:
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5CNwYjZhZmZyQjZjFWM0kTOxQTM0gTY2MDNyI2NzATO28CX5d2bs92Yl1iclB3bsVmdlR2LcNWaw9CXt92Yu4GZjlGbh5yYjV3Lc9CX6MHc0RHaiojIsJye.png)
Approach 1: ETAG mechanism
This approach is used in SAP CRM Fiori.
Suppose user Jerry has opened a given opportunity with ID = 3456 and clicked the Edit button: