While it is possible to on charge GST on an import to a Customer through a General Ledger Code or Product Code set to 100% GST, the software does not currently (Version 8.460) record this GST for the GST reports.
There is a ticket raised to deal with this issue (#12918).
Currently the GST return will need to be adjusted for this scenario or the Customer Invoice credited, and the GST record put through as a Supplier credit and contra’ed.
To identify any invoices where this GST rate has been used please call Infusion Support.
SELECT * FROM INVIDX WHERE AUDIT IN (SELECT AUDIT FROM INVLN WHERE GSTCODE=”C”)