We upgraded from AR2020.2 SE to AR2020.3.1 SE (We unistalled all of 2020.2 SE before updating to 2020.3.1 as we have been caught before by upgrades not working properly if you do not unistall previous releases).
Now when we go to connect to the URI published by the API, the API returns an "Internal Error 500".
We have spent 3 days trying to get help on this error but have not heard from anyone at MYOB with expertise in this area.