Integration of Unzer payment methods in the online shop

Integration via REST-based API

For the integration of Unzer we provide our REST-based API interface. This allows you to integrate the Unzer solutions you require into any current online shop or ERP system - simply, quickly and easily.

A payment transaction is processed in the following steps via API:

1. Generation of an access token with your access data
2. Submission of the purchase enquiry in order to carry out a credit check
3. If successful, you receive a payment guarantee reference that uniquely identifies the order and uses it for communication.
4. Should the customer make changes (additional products, order cancellation) to his shopping cart, the amount of the payment guarantee is updated via the API.
5. If the purchase is completed by the customer, this is confirmed by the payment guarantee reference.

From this moment on this purchase is secured - you have 100% protection against non-payment. You use the API interface to notify us of incoming payments.

If these are not available, please also report the payment default to us via API. At this moment, the payment guarantee becomes effective; we automatically purchase the outstanding claim for 100% of the value. Further details on the technical connection can be found in our Technical Quick Start Guide, which we will be happy to send you on request.

Further details on the technical connection can be found in our Technical Quick Start Guide, which we will be happy to send you on request.

We will be happy to make these available to you - just get in touch with us.