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mypaymentnow.com →Developer docs
REST + JSON API reference, authentication, endpoints, and code samples.
docs.mypaymentnow.com →Popular CoreGateway articles.
Hands-on guides for the most common questions. Pulled from the CoreCommerce knowledge base.
CoreGateway Features
Overview of every feature in CoreGateway. Virtual terminal, hosted page, invoicing, recurring, vault, and more.
CoreGateway Demo Video
Walkthrough of the CoreGateway dashboard and how to run your first transaction.
Dynamic HPP Fields
How to pass invoice numbers, customer IDs, line items, and custom fields through your Hosted Payments Page.
Invoicing
Create, send, and track branded invoices with secure pay links. Customize with your brand name, logo, and address. Add products and categories.
Surcharging
How to enable surcharging on card transactions. Disclosure, calculation, and state-rule compliance.
Voids and Refunds
How to void an authorized transaction before settlement, and how to issue a refund after settlement.
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