Prerequisites
Before integrating the payment module, please make sure that you are in possession of the following elements:
- Payment module file: PayZen_Magento_1.4-1.9_v1.9.1.zip
- Your shop ID
- Test or production certificate
The shop ID and the certificates are available in the PayZen Back Office (Menu: Settings > Shop > Certificates)

Your PayZen Back Office is available at this address: