using Prove.Proveapi;
using Prove.Proveapi.Models.Components;
using System.Collections.Generic;

var sdk = new ProveAPI(auth: "<YOUR_AUTH_HERE>");

V3BatchEnrollIdentitiesRequest req = new V3BatchEnrollIdentitiesRequest() {
    ClientRequestId = "71010d88-d0e7-4a24-9297-d1be6fefde81",
    Items = new List<IdentityItem>() {
        new IdentityItem() {
            ClientCustomerId = "e0f78bc2-f748-4eda-9d29-d756844507fc",
            DeviceId = "bf9ea15d-7dfa-4bb4-a64c-6c26b53472fc",
            PhoneNumber = "2001001695",
        },
        new IdentityItem() {
            ClientCustomerId = "e0f78bc2-f748-4eda-9d29-d756844507fc",
            DeviceId = "bf9ea15d-7dfa-4bb4-a64c-6c26b53472fc",
            PhoneNumber = "2001001695",
        },
    },
};

var res = await sdk.Identity.V3BatchEnrollIdentitiesAsync(req);

// handle response

{
  "results": [
    {
      "identityId": "e0f78bc2-f748-4eda-9d29-d756844507fc"
    },
    {
      "error": "Invalid Phone Number"
    }
  ]
}