# Implementation and Testing

Learn how to implement and test your integration into Finix's APIs.

If you're planning to use Finix's APIs, implementing and testing your integration is critical before going live and accepting payments on behalf of customers. Finix recommends reading through our guides here before starting your implementation.

## Learn More

Error Codes
Learn how to securely encrypt and migrate sensitive payment data with Finix's PGP Key.

Failure Codes
Learn how to securely encrypt and migrate sensitive payment data with Finix's PGP Key.

Integration Checklist
Use this checklist to ensure a smooth transition when going live with Finix.

Testing Your Integration
Learn how to migrate your existing customer data into Finix.