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.