In summary, there are two steps required to do this setting 

(a) Create new tax code e.g. SR-0 and ZP

(b) Do the mapping of SR-0 to GST Column 5A

(c) Set Default Sales tax codeto SR-0


Create new Tax code of SR-0 and TX-0

1. Go to Maintenance  - > General  ->   Tax  








2. Create new Tax Code SR-0 ; Remember on Tax Method is SRS to ensure it appears in GST-03 Column 5A










Save and exit the tax code maintenance



3. Go GST Wizard to map for Item Group and Item (*  Applicable if you have setting using GST wizard before)








4. At Item Group --> Press I would like to update my item group now




5. Change thisSales Tax Code at Item Group Maintenance then Click save.








8. Go to your Item --> Press I would like to update my item now




9. Make sure this Purchases Tax Code and Sales Tax Code already change. Click Save





**For customers that has set their Debtor and Creditor with Tax code, please amend it acccordingly. If not you can ignore the following



Open Maintenance --> Select the Debtor customer 




Choose the Default Supply Tax Code then change the Tax code: SR-Z - 0% for Debtor.




Open Maintenance --> Select the Creditor/Suppliers then select ZP.




Go to Control Panel --> Setting --> click on Account Setting 









Go to GST/NAT Setting --> Default Tax Code --> Standard Rated Purchases to ZP-0

Go to GST/NAT Setting --> Default Tax Code --> Standard Rated Supply to SR-0