How to prohibit changing the amount when paying using YandexForm?

Question

Payment systems

I took an example of a custom form from here
. I check :
when choosing "payment by bank card", the payment amount is fixed,

but if you select "Yandex.Money",

the user can change the amount of the transfer.
This is fine?

Answer 1

they have a tolerable api where you can receive a callback for incoming transactions - from this event you can already dance - check the amount of appointment / comment / message, just note that when paying through the Yandex.Money application and the web interface, the comment to the transfer in the first case fixed and pre-filled, and in the api you need to look no longer for it, but for the “message”