curl --request PATCH \
  --url https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/ \
  --header 'Content-Type: multipart/form-data' \
  --header 'X-API-Version: <api-key>' \
  --header 'X-Client-ID: <api-key>' \
  --header 'X-Client-Secret: <api-key>' \
  --form document_type=INVOICE \
  --form file=@example-file

import requests

url = "https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/"

files = { "file": ("example-file", open("example-file", "rb")) }
payload = { "document_type": "INVOICE" }
headers = {
    "X-Client-ID": "<api-key>",
    "X-Client-Secret": "<api-key>",
    "X-API-Version": "<api-key>"
}

response = requests.patch(url, data=payload, files=files, headers=headers)

print(response.text)

const form = new FormData();
form.append('document_type', 'INVOICE');
form.append('file', 'invoice.pdf');

const options = {
  method: 'PATCH',
  headers: {
    'X-Client-ID': '<api-key>',
    'X-Client-Secret': '<api-key>',
    'X-API-Version': '<api-key>'
  }
};

options.body = form;

fetch('https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document_type\"\r\n\r\nINVOICE\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\ninvoice.pdf\r\n-----011000010111000001101001--",
  CURLOPT_HTTPHEADER => [
    "Content-Type: multipart/form-data",
    "X-API-Version: <api-key>",
    "X-Client-ID: <api-key>",
    "X-Client-Secret: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/"

	payload := strings.NewReader("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document_type\"\r\n\r\nINVOICE\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\ninvoice.pdf\r\n-----011000010111000001101001--")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("X-Client-ID", "<api-key>")
	req.Header.Add("X-Client-Secret", "<api-key>")
	req.Header.Add("X-API-Version", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/")
  .header("X-Client-ID", "<api-key>")
  .header("X-Client-Secret", "<api-key>")
  .header("X-API-Version", "<api-key>")
  .body("-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document_type\"\r\n\r\nINVOICE\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\ninvoice.pdf\r\n-----011000010111000001101001--")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api-pacb-uat.eximpe.com/partners/merchants/{merchant_id}/documents/")

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

request = Net::HTTP::Patch.new(url)
request["X-Client-ID"] = '<api-key>'
request["X-Client-Secret"] = '<api-key>'
request["X-API-Version"] = '<api-key>'
request.body = "-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"document_type\"\r\n\r\nINVOICE\r\n-----011000010111000001101001\r\nContent-Disposition: form-data; name=\"file\"; filename=\"example-file\"\r\nContent-Type: application/octet-stream\r\n\r\ninvoice.pdf\r\n-----011000010111000001101001--"

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

{
  "success": true,
  "message": "Invoice uploaded successfully",
  "data": {
    "detail": "Invoice uploaded successfully"
  }
}

{
  "success": false,
  "error": {
    "code": "ERR_MERCHANT_001",
    "message": "Validation error",
    "details": {
      "document_type": [
        "\"RECEIPT\" is not a valid choice."
      ]
    }
  }
}

{
  "success": false,
  "error": {
    "code": "ERR_AUTH_000",
    "message": "Missing credentials",
    "details": {
      "authentication": "Missing credentials."
    }
  }
}

{
  "success": false,
  "error": {
    "code": "ERR_MERCHANT_017",
    "message": "Sub-Merchant endpoints are only available to IMPORT PSP accounts",
    "details": {}
  }
}

{
  "success": false,
  "error": {
    "code": "ERR_MERCHANT_016",
    "message": "Sub-Merchant not found",
    "details": {}
  }
}