To allow multiple QuickBooks users to be connected via the add-in to the same QuickBooks company (organization), simultaneously, you will need to deploy this workaround. Please create a new QuickBooks user ID with QuickBooks admin privileges. Your add-in users will use this ID to connect to QuickBooks from within the add-in. For example, create a QuickBooks user addin@abcompany.com .
Not following this process, will result in users getting disconnected from QuickBooks in the add-in, as new users connect. The disconnected users will receive #VALUE errors in their spreadsheet as they recalc.
We are publishing this workaround, due to the fact that QuickBooks limits connections to one admin user at a given time.