POST /api/v2/conversations/calls 403 Forbidden with valid token

NICE CXone API & Integrations
1

Getting 403 Forbidden when calling POST /api/v2/conversations/calls. The token has all required scopes. Code is below.

var call = new CreateCallRequest { From = new Contact { Identifier = "+15550199", Type = "phoneNumber" }, To = new Contact { Identifier = "+15550100", Type = "phoneNumber" }, WrapUpCode = null };
var result = await _conversationsApi.PostConversationsCallsAsync(call);
  • .NET SDK v12.1
  • Token scope includes conversation:call and user:call
  • User is logged in via OOB desktop
  • Tried adding OnBehalfOf header but same result