I’m from Russia. Paypal is not widely used and Stripe is not available in my country.
One of the most popular payment system in my country is Yandex.Merchant (YM).
So I need to make it possible for my clients to pay via YM.
Here is a documentation about what I need to send to YM: link with tech details.
So I created a new API call that is used as an action with method POST to https://money.yandex.ru/eshop.xml
And four parameters: shopId, scid, sum, customerNumber.
When I initialise a call - I get a message: “There was an issue setting up your call - Found”.
What can be the reason of this error?