Why might Google Pay & Sber payment fail?

Question

Android

On the android side, a payment request is generated. The response from Google Pay is returned, all is well.
Then we take the token from the answer and give it to the "collector". Error 10 is constantly returned - incorrect value of the tokenPay parameter.

In this regard, questions arose on some fields of the request:

.put(
    "tokenizationSpecification", JSONObject()
        .put("type", "PAYMENT_GATEWAY")
        .put(
            "parameters", JSONObject()
                .put("gateway", gateway)
                .put("gatewayMerchantId", gatewayMerchantId)
        )
)
.....
.put("merchantInfo", JSONObject()
    .put("merchantName", merchantName)
    .put("merchantId", merchantId)
)

gateway - sberbank everything is clear
here, but not quite with gatewayMerchantId, merchantName, merchantId. Where does each value come from?

Has anyone experienced something similar?

Answer 1

You conclude an acquiring agreement with Sberbank, they will issue