Service M8 support were great and also pointed out that thread in the MYOB forum. They sent me clear instructions on what I needed to do and yesterday all was sorted.
Definitely an issue on MYOB end!
I have been having the same issue with our connection to WebNinja - they have said the situation lies with MYOB of who I have been in Live Chat with and nothing - nobody can seem to help. Back to getting WebNinja to take a look who are extremely helpful. If the problem lies with MYOB it is IMPOSSIBLE to get help!!! Was promised a call back/email if the problem wasn't resolved on the 8/8 and still noting on the 14/8 - this is MADNESS!!! What to do next is really anybody's guess!!!!!
Hi Shawparth , Live chat will not be able to help you, as they do not know the details of the API. See App encountering validation error | MYOB Community. on the forum for more details.
Essentially the access token being returned (when a new access token is requested by submitting a refresh token) contains incorrect values. This is a fault of the API. You should contact WebNinja (Edit: Not ServiceM8...) support in the first instance, who may by now have a solution. As developers, they should be communicating with MYOB API support (https://apisupport.myob.com/hc/en-us/requests/new?ticket_form_id=215283)
I have been told by an MYOB partner that the fault had been corrected, but I'm not so sure now.
