POST /api/v2/conversations/calls returns 403 with correct scopes

NICE CXone API & Integrations
1

Trying to initiate outbound call for agent using POST /api/v2/conversations/calls. Getting 403 Forbidden. Token has conversation:call:write scope. Code below.

var req = new CreateCallRequest { 
 From = new Contact { Identifier = "+1555...", Type = "phone" },
 To = new Contact { Identifier = "+1555...", Type = "phone" }
};
client.ConversationsApi.PostConversationsCalls(req);

Error says insufficient permissions.