As per GST it is mandatory to have a valid GST registration for each state where you are doing business with FBA. Service providers at the Goods and Services Tax (GST) registration service will guide you on the applicability and compliances under GST for your business, register your business under GST, and obtain your GSTIN.
For assistance with GST registration, you can reach out to our consultants through SPN (Service Provider Network):
Disclaimer: If you choose a service provider you will connect directly with that provider. Amazon does not endorse any service provider or its services. Any price shown on the SPN page in a converted currency are presented for your reference only and the service providers may charge you a different currency or amount with applicable taxes.