Rest API - Create a ticket, Assigned_to field

[bigbacon]

I am in the process of changing some code over from the old SOAP methods to use the REST API to create tickets. 

I have run into an issue where the assigned_to field will never fill in but I can fill in just about anything else using the login and password we use to make the API calls.

I am just putting in the person's name \"assigned_to\":\"Fname Lname\" which I believe worked just fine using SOAP but no longer works here.

Is there some kind of role missing?

I can create tickets and so far I can add the following fields, category, subcategory,caller_id, assignment_group, short description, and contacttype

assigned_to does work fine in the API explorer under my credentials.

[bigbacon]

Same thing with due_date.

[bigbacon]

Trying to assign a ticket using a PUT or PATCH also does not fill in the assigned_to field. Doesn't matter what we use, sys_id, email, logon, etc.