Important information

The API reference is now available here.
The deprecated API reference is available here.


TLS/SSL certificate update

April 04, 2022

Learn more about the TLS/SSL certificate updates.

The TLS/SSL certificate of our Unzer API for domain *, such as or will be replaced on the April 12, 2022.

We strongly recommend that you do not store dedicated certificates on the server side in your system.

If you have a stored certificate, then you must use the updated certificate from April 12, 2022. To replace the existing certificate, download the new one and follow the steps for updating it on your system.

This certificate is valid for the entire * domain and will be used on both the test and the live systems.

It is already updated on the test system, so you can test it with the new certificate.

On our production system, the change will take place on April 12, 2022 12:00 CEST. The certificate can then be tested.

icon info
  • If the shop systems and web servers do not have the SSL certificate of the respective remote station stored, then no action is required.
  • However, if you check the SSL certificate of the payment system in your system, the new certificate must also be stored here.
  • You must also check other systems such as merchandise management and fulfillment that are connected to the Unzer system with regard to certificate validation.

Please send an email to for any further questions.