Identifying yourself during data exchange

To be able to interact with the payment gateway, the merchant needs to have:

  • The shop ID: allows to identify the merchant website during data exchange. Its value is transmitted in the vads_site_id field.
  • The certificate: allows to compute the alphanumeric signature transmitted in the signature field.

To retrieve these values:

  1. Sing into the Back Office: https://secure.payzen.eu/vads-merchant/
  2. Go to Settings > Shop.
  3. Select the Certificates tab.
    Figure 1. Viewing the shop ID and the certificate.

Two types of certificates are available:

  • The test certificate for generating the form signature in test mode.
  • The production certificate for generating the form signature in production mode.