# Create Invoice

**Request:**

```http
POST /2.0/merchant/create-invoice
```

**Request Body:**

```json
{
    "usdAmountInCents": 10000, // Invoice amount in cents
    "assetId": "uuid", // Optional: Predefined asset ID for payment
    "productTitle": "Test Product", // Optional: Product title
    "extraData": "Optional data" // Optional: Additional invoice parameters
}
```

**Response (200 OK):**

```json
{
    "id": "UUID", // Invoice ID
    "usdAmount": "0", // Invoice amount in USD
    "status": "pending", // Invoice status
    "paymentPageLink": "https://pp.omypayments.com/?id=UUID", // Link to the payment page
    "productTitle": "Test Product", // Product title
    "extraData": null, // Additional invoice information.
    "cryptoAmount": "0", // Amount in selected cryptocurrency (or null if not chosen)
    "crypto": { // Cryptocurrency data (or null if not chosen)
        "id": "uuid", // Crypto UUID
        "title": "Tether USD", // Crypto title
        "symbol": "USDT" // Crypto symbol
        "contractAddress": "0x0000000000000000000000000000000000000000" // Crypto contract address
        "decimals": 6 // Crypto decimals
        "logoURI": "https://..." // Crypto logo URI
    },
    "network": { // Network data (or null if not chosen)
        "id": "UUID", // Network UUID
        "chainId": "56", // Network chain ID
        "symbol": "BSC", // Network symbol
        "name": "BNB Chain", // Network title
        "networkType": "evm" // Network type
    },
    "address": "0x0000000000000000000000000000000000000000", // Payment address (or null if not chosen)
    "expiredAt": "2025-03-11 14:30:16" // Invoice expiration datetime (UTC+0)
}
```

**Error Responses:**

* **400 Bad Request (Validation Error):**

  ```json
  {
      "success": false,
      "message": "Validation error",
      "errors": [
          {
              "field": "usdAmountInCents",
              "messages": ["Invalid value format"]
          }
      ]
  }
  ```
* **500 Internal Server Error:**

  ```json
  {
      "success": false,
      "message": "Internal Server Error",
      "statusCode": 500
  }
  ```