Confirm merchant eligibility first
Ask the bank or provider what business types they support, what documents are required and how approval works.
Check settlement and currency
Know which currencies customers can pay in, which currency reaches the account and the settlement timing.
Check platform integration
A gateway may support one platform directly, require a plugin, use a hosted checkout or need custom integration.
Plan for failed and alternative payments
The store needs clear messages when payment fails and a process for other approved methods.
Keep raw card data out of the site
Use established hosted or tokenized payment flows and follow the provider requirements for checkout security.
