Welcome to the Developer Portal

Default UI Integration
- Integrating Default UI
- Migrating from PayButton to Default UI
- Managing Default UI Properties
- Summary Screen
- Incremental Authorization
- Custom Receipt Printing
- Automatic Receipt Printing
- Standalone Receipt Printing
- Sending Receipts via Email
- Customization
- Mobile UI Customization
- Release Notes

PayButton Integration
- Integration
- Summary Screen
- On-Reader Tipping
- Loyalty and Bonus Cards
- Pre-Auth and Capture
- Refunds
- Custom Receipts
- Testing
- Going Live
- Release Notes

Windows Integration
- Configure, Run, and Test PayServer
- .NET POS Integration via PayClient
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
  - On-Reader Tipping
  - Pre-Auth and Capture
- POS Integration via PayProtocol
  - Usage and Message Flows
  - Message Specification
  - Refunds
  - Custom Receipts
  - Preformatted Receipts
- Testing
- Going Live
- Release Notes

Custom Integration
- Installation
- Integration
- Signature
- Refunds
- Email & Print Receipts
- Custom Receipts
- Custom Receipts for PAX Terminals
- Preformatted Receipts
- On-Reader Tipping
- Loyalty & Bonus Cards
- Pre-Auth & Capture
- Connection Keep-Alive
- Testing
- Going Live

Backend Integration
- API Endpoints and Authentication
- WebHooks
- Query Transactions
- Refunds
- Custom Receipts
- Going Live
- API Documentation

Merchant Setup
- AMEX Merchant Setup
- Elavon Merchant Setup
- Nexi Merchant Setup

Testing

Testing is required when you use custom merchant and customer receipts with PayButton. We must review your custom receipts to make sure they include all required information.

Contact us and include scanned images of the custom merchant and customer receipts that you implemented. We will review and approve the custom receipts or provide you with information about what must be done in order to receive approval.

PayButton Integration