Create invoice

import requests
import json

url = "https://api.example.com/v1/api/v1/create-invoice"
headers = {
  "Content-Type": "application/json",
  "X-Api-Key": "YOUR_API_KEY"
}
data = {
  "amount": "1500.00",
  "callback_url": "https://yoursite.com/webhooks/payment",
  "currency_code": "UAH",
  "customer_id": "user_12345",
  "external_id": "order-2026-0001",
  "fail_url": "https://yoursite.com/payment/failed",
  "purpose": "Payment for Premium subscription",
  "success_url": "https://yoursite.com/payment/success"
}

response = requests.post(url, headers=headers, json=data)
print(response.json())

const response = await fetch("https://api.example.com/v1/api/v1/create-invoice", {
  method: "POST",
  headers: {
  "Content-Type": "application/json",
  "X-Api-Key": "YOUR_API_KEY"
},
  body: JSON.stringify({
  "amount": "1500.00",
  "callback_url": "https://yoursite.com/webhooks/payment",
  "currency_code": "UAH",
  "customer_id": "user_12345",
  "external_id": "order-2026-0001",
  "fail_url": "https://yoursite.com/payment/failed",
  "purpose": "Payment for Premium subscription",
  "success_url": "https://yoursite.com/payment/success"
})
});

const data = await response.json();
console.log(data);

package main

import (
    "fmt"
    "net/http"
    "bytes"
    "encoding/json"
)

func main() {
    data := []byte(`{
  "amount": "1500.00",
  "callback_url": "https://yoursite.com/webhooks/payment",
  "currency_code": "UAH",
  "customer_id": "user_12345",
  "external_id": "order-2026-0001",
  "fail_url": "https://yoursite.com/payment/failed",
  "purpose": "Payment for Premium subscription",
  "success_url": "https://yoursite.com/payment/success"
}`)

    req, err := http.NewRequest("POST", "https://api.example.com/v1/api/v1/create-invoice", bytes.NewBuffer(data))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Content-Type", "application/json")
    req.Header.Set("X-Api-Key", "YOUR_API_KEY")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    fmt.Println("Response Status:", resp.Status)
}

require 'net/http'
require 'json'

uri = URI('https://api.example.com/v1/api/v1/create-invoice')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request['X-Api-Key'] = 'YOUR_API_KEY'
request.body = '{
  "amount": "1500.00",
  "callback_url": "https://yoursite.com/webhooks/payment",
  "currency_code": "UAH",
  "customer_id": "user_12345",
  "external_id": "order-2026-0001",
  "fail_url": "https://yoursite.com/payment/failed",
  "purpose": "Payment for Premium subscription",
  "success_url": "https://yoursite.com/payment/success"
}'

response = http.request(request)
puts response.body

{
  "error": "Bad Request",
  "message": "The request contains invalid parameters or malformed data",
  "code": 400,
  "details": [
    {
      "field": "email",
      "message": "Invalid email format"
    }
  ]
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "API_KEY_MISSING",
    "message": "Missing X-Api-Key header"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "API_KEY_INVALID",
    "message": "Invalid or inactive API key"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "OWNER_BLOCKED",
    "message": "Merchant owner is blocked"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "MERCHANT_BLOCKED",
    "message": "Merchant is banned"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "MERCHANT_NOT_ACTIVE",
    "message": "Merchant is inactive"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "CUSTOMER_RATE_LIMIT",
    "message": "Customer created too many unpaid invoices"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "DUPLICATE_EXTERNAL_ID",
    "message": "External ID for this merchant is already exists, try to generate another External ID"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "CURRENCY_INVALID",
    "message": "Currency not found or disabled"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "PAYMENT_METHOD_NOT_FOUND",
    "message": "No active payment method for currency/amount"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "AMOUNT_BELOW_MIN",
    "message": "Amount is below the minimum supported by any active payment method for this currency"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "AMOUNT_ABOVE_MAX",
    "message": "Amount exceeds the maximum supported by any active payment method for this currency"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "MISSING_REQUIRED_URLS",
    "message": "callback_url, success_url and fail_url are required. Provide them in the request or set defaults in merchant settings"
  }
}

{
  "successful": false,
  "request_id": "a1b2c3d4-...",
  "error": {
    "code": "DEALS_SYSTEM_DISABLED",
    "message": "Deals system is disabled"
  }
}