

This payments API uses OAuth authentication (Access Token Secret) and not the "connection ticket", so is there a way to use this API in conjunction with QB DESKTOP? If so, where does the client ( the one that has the Intuit merchant account) go to obtain the Access Token Secret? Note that the client does not have the QB Online app, they just have a merchant account with Intuit and QBD.


We also have support for QB ONLINE via the new QBO APIs as well as the new QB Payment APIs that does support ACH. What API(s) can we use for this? Note that these QB Desktop clients use a "connection ticket" for authentication. This continues to work fine for credit cards, but now we need to support ACH payments for QB Desktop. We've been using the QBMS for our QB DESKTOP clients using this QBMS API:
