How to Switch Payment Processors for a Research Peptide Store

Obtain approval before scheduling the switch

Confirm that the new merchant account covers your actual catalog, domains, and sales channels. Record the approved gateway, funding arrangements, and support contact. Inventory the checkout extension, order emails, warehouse connection, webhooks, and saved payment arrangements attached to your old provider.

Exercise the entire checkout in staging

• Test successful payments, declines, timeouts, cancellations, and a supported partial refund using approved test mode.
• Check order status, stock handling, receipts, support visibility, and that staging cannot dispatch real shipments or collect live funds.
• List saved payment methods and recurring agreements separately. Ask both providers which items can migrate and what customers must reauthorize.

Define the cutover and rollback

Assign one person to change production configuration and another to observe checkout and provider records. Record the switch time and which orders belong to each provider. Define which observations trigger rollback, such as successful provider charges paired with failed orders. Reconcile in-flight transactions before inviting any customer to retry.

Keep old transactions operationally accessible

Review the old account’s closure and access terms before cancelling it. Make sure staff can handle historical refunds, disputes, and reserve releases through the appropriate channel. Archive statements and transaction references securely and validate the first deposit on the new account.