I need to configure PI tags receiving data from webservice interface, but is confuse steps to follow
You can have a few options. First, you may be able to use PI Connector for UFL. PI Connector is a new form of Interface that can feed data into your PI System. It can take in web queries or regularly poll at your endpoint.
Or you may be able to use your PI Web API instance if you have it installed or have it available with PI Vision.
Then you need a web client to make requests to PI Web API with your data and required information.
Retrieving data ...