This functionality can only work if you have configured the redirect URL in your account. This can be configured programmatically via the Webhook Configuration Endpoint Alternatively, it can be configured directly from your mercahnt portal account.
When invoking this URL, Smobilpay for e-commerce appends your reference ID that was generated by your server in the initial order placement request and the payment status with the following URL:
returnUrl: is the URL configured by you
your_reference_id: the unique reference id of this payment that was generated by your server and provided to e-nkap in the initial order placement request.
status: the current payment status. See 220.127.116.11
Called URL by e-nkap: http://api.e-shop.enkap.de/return/112238uy77889w?status=IN_PROGRESS