In SSI using Indy, how verifier chooses the schema for proof request?

Question

In a Self Sovereign Identity, when verifier sends a proof request to the holder of credential, how the verifier makes sure to use correct schema id that is related to the holder during the proof request to the holder?

Answer 1

I get more in depth and I can now say that the verifier can ask for a particular "schema_id" in the proof request's restrictions:(from here)

{
  "name": "proof-schema1",
  "version": "1.0",
  "requested_attributes": [
    {
      "names": ["class", "grade"],
      "restrictions": [{"cred_def_id": "<cred-def-id>"}]
    }, 
    {
      "name": "phone_number"
    }
  ],
  "requested_predicates": [
    {
      "name": "rank",
      "p_type": "<=",
      "p_value": 10,
      "restrictions": [{"cred_def_id": "<cred-def-id>"}]
    }
  ],
  "cred_filter": [
    {
       "attr_name": "class",
       "attr_values": ["Math 100"]
       "exclude": true
    },
    {
       "attr_name": "class",
       "attr_values": ["Math *"]
    }
  ]
}