Does fmAccounting Link (Xero Edition) use a plug-in?
FileMaker Pro does not have the required functions to integrate with OAuth 1.0a Xero Apps, so a FileMaker plug-in is required with v1. With the introduction of OAuth 2.0 we have also released v2 of fmAccounting Link (Xero Edition) which does not require a plug-in and will require FileMaker Pro v16 or later.