# Get next invoice number

GET https://api-sandbox.payabli.com/api/Invoice/getNumber/{entry}

Retrieves the next available invoice number for a paypoint.

Reference: https://docs.payabli.com/developers/api-reference/invoice/get-next-invoicenumber-for-entrypoint

## OpenAPI Specification

```yaml
openapi: 3.1.1
info:
  title: Get next InvoiceNumber for entrypoint
  version: endpoint_invoice.GetInvoiceNumber
paths:
  /Invoice/getNumber/{entry}:
    get:
      operationId: get-invoice-number
      summary: Get next InvoiceNumber for entrypoint
      description: Retrieves the next available invoice number for a paypoint.
      tags:
        - - subpackage_invoice
      parameters:
        - name: entry
          in: path
          description: >-
            The paypoint's entrypoint identifier. [Learn
            more](/developers/api-reference/api-overview#entrypoint-vs-entry)
          required: true
          schema:
            type: string
        - name: requestToken
          in: header
          required: true
          schema:
            type: string
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/type_invoice:InvoiceNumberResponse'
        '400':
          description: Bad request/ invalid data
          content: {}
        '401':
          description: Unauthorized request.
          content: {}
        '500':
          description: Internal API Error
          content: {}
        '503':
          description: Database connection error
          content: {}
components:
  schemas:
    type_:IsSuccess:
      type: boolean
    type_:ResponseText:
      type: string
    type_invoice:InvoiceNumberResponse:
      type: object
      properties:
        isSuccess:
          $ref: '#/components/schemas/type_:IsSuccess'
        responseText:
          $ref: '#/components/schemas/type_:ResponseText'
        responseData:
          type: string
          description: >-
            If `isSuccess` = true, this contains the next available invoice
            number in the format defined by paypoint settings. If `isSuccess` =
            false, this contains the reason for the error.
      required:
        - isSuccess
        - responseText
        - responseData

```

## SDK Code Examples

```typescript GetNextInvoiceNumber
import { PayabliClient, PayabliEnvironment } from "@payabli/sdk-node";

async function main() {
    const client = new PayabliClient({
        environment: PayabliEnvironment.Sandbox,
        apiKey: "YOUR_API_KEY_HERE",
    });
    await client.invoice.getInvoiceNumber("8cfec329267");
}
main();

```

```python GetNextInvoiceNumber
from payabli import payabli
from payabli.environment import payabliEnvironment

client = payabli(
    environment=payabliEnvironment.SANDBOX,
    api_key="YOUR_API_KEY_HERE"
)

client.invoice.get_invoice_number(
    entry="8cfec329267"
)

```

```csharp GetNextInvoiceNumber
using PayabliApi;
using System.Threading.Tasks;

namespace Usage;

public class Example
{
    public async Task Do() {
        var client = new PayabliApiClient(
            apiKey: "YOUR_API_KEY_HERE",
            clientOptions: new ClientOptions {
                BaseUrl = PayabliApiEnvironment.Sandbox
            }
        );

        await client.Invoice.GetInvoiceNumberAsync(
            "8cfec329267"
        );
    }

}

```

```go GetNextInvoiceNumber
package example

import (
    client "github.com/payabli/sdk-go/v/client"
    option "github.com/payabli/sdk-go/v/option"
    payabli "github.com/payabli/sdk-go/v"
    context "context"
)

func do() {
    client := client.NewClient(
        option.WithBaseURL(
            payabli.Environments.Sandbox,
        ),
        option.WithApiKey(
            "YOUR_API_KEY_HERE",
        ),
    )
    client.Invoice.GetInvoiceNumber(
        context.TODO(),
        "8cfec329267",
    )
}

```

```ruby GetNextInvoiceNumber
require 'uri'
require 'net/http'

url = URI("https://api-sandbox.payabli.com/api/Invoice/getNumber/8cfec329267")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["requestToken"] = '<apiKey>'

response = http.request(request)
puts response.read_body
```

```java GetNextInvoiceNumber
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api-sandbox.payabli.com/api/Invoice/getNumber/8cfec329267")
  .header("requestToken", "<apiKey>")
  .asString();
```

```php GetNextInvoiceNumber
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api-sandbox.payabli.com/api/Invoice/getNumber/8cfec329267', [
  'headers' => [
    'requestToken' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```swift GetNextInvoiceNumber
import Foundation

let headers = ["requestToken": "<apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api-sandbox.payabli.com/api/Invoice/getNumber/8cfec329267")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```