GSTFRE and INTERNATIONAL

G’day Folks - who can help please. The problem we have is that for INTERNATIONAL customers, sales lines GST Prod Posting Group (GSTPPG) always validates to GST10 (picks it up from Item.GSTPPG) so it is a manual step required for user to change from GST10 to GSTFRE (needs to be GSTFRE for BAS purposes). Is it a design or functionality intention for this to be a manual step rather then default to GSTFRE if customer is INTERNATIONAL - for instance why is there no FOREIGN option for customers (as per vendors)? Then, IF Customer.FOREIGN TRUE, GSTPPG:=‘GSTFRE’ ; I know GST/VAT is different for all countries so do not expect to have this problem across the board - using 3.70B AU. Thanks in advance. Cheers and best regards, Matthias.