Frequent asked questions

Q: Merchant has account, request is correct, but he still receive Error something wrong in reponse. + This case may occur when new Merchant try to process transaction but he has not created database schema in Datacore/Datacenter. +
Q: Merchant have encoded username and password with Base64 algorithm, but still cannot log in. + Probably authentication header is badly encoded. Correct credentials encoding must have format like: username:password +
Q: I set correct URL and HTTP request body but I still receive:

{
    "error": {
        "message": "No instances available to process transaction."
    }
}

Please check your request headers. Remember that depending on executing method, Content-Type header may changes. Without correct header method will not work. + + Q: My HTTP request is correct for sure but I cannot execute transaction. This situation is caused by this error:

{
    "error": {
        "message": "Another transaction with the same id has already been processed."
    }
}

Each transaction must have new, unique UUID. Set new value of requestId field and try again.