All the business entities registering under GST are provided with a unique identification number known as GSTIN or GST Identification Number. It is unique for every tax payer.
Once you have logged in to your GMAS account follow the steps given below to add your GSTIN details
Move your cursor to the left side of the window and select the seventh option of “taxation”.
Select the first option of “GSTIN Information”.
You will land on the “GST information” page.
Enter the relevant details.
Gstin value - It refers to the Goods and Services Tax Identification Number (GSTIN).
Home state/ Region/ Province - The state where your store is registered.
Click on the “Save” button to save the details.
“All products prices are:” - From the drop down menu select “Tax Exclusive” if the prices of your products does not have tax component included in them, else select “Tax exclusive”.