Merchant Registration for Hosted Service Providers
Note: If you are an unhosted provider, please see Unhosted (providers who will make calls using the merchant's own API keys).
If you are a hosted provider, you will need to supply a return URL as part of the POST request that you initiate. This is the URL where the merchant (and their credentials) will be returned following a completed registration.
Your account representative will provide you with the spId, which will be needed during the registration flow process.
