Request Helpdesk Feature

Request Helpdesk Feature

I have installed Desktop Central MSP and Service Desk Plus MSP on premise. When users try to use the "Send Request to Helpdesk" feature it responds with an error message stating it cannot send. I have setup the API connection and have a green light on all settings in both admin sections and I have enabled the helpdesk feature in Desktop Central. I performed a google search and found hardly nothing on the issue. Can anyone help?
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