Good afternoon, most likely, at the time the action was created - more than 2 years ago, in the Rosette documentation, the msgType parameter was optional or missing
https://api-seller.rozetka.com.ua/apidoc/In addition, I did not find a way to extract all orders, deleted, items chats in one request - you need to add a setting, what to unload, refinement is needed - 2 hours
To receive messages from the call center, you need to send a request using a different method; when creating the action, this was not an issue - another 6 hours