Integrating payment gateway with wso2 api manager

Question

I'm trying to integrate payment gateway with wso2 api manager.I'm following wso2 documentation. According to this documentation "If you need to redirect back to the API Manager, call the workflow call back service to complete the workflow. To invoke this service, set the callback URL and the workflow reference ID in the additional parameters" what exactly is the call back url here. and how to make subscription complete after payment is successfull. i.e to call complete method??

Answer 1

Callback URL is a link which will be invoked by API method after its work is done. Here callback url is the additional parameter according to the API documentation. You need to set this field with the page where you want to redirect your client after payment.