ITrack/Quickbooks/Error 3000 - the given object ID in the field list is invalid

Error #3000 - The given object ID in the field list is invalid.

Cause

One of the things on that document is not correctly synced with Quickbooks - the Quickbooks ID that ITrack knows is not the one in Quickbooks.

Solution

Resync the objects on the thing you were trying to push (double-click on them, select the matching object in Quickbooks).