curl --request POST \
  --url https://api.ketapay.com/v1/chargebacks/{id}/evidence \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --header 'KetaPay-Customer-Token: <api-key>' \
  --data '
{
  "statement": "<string>",
  "files": [
    "3c90c3cc-0d44-4b50-8888-8dd25736052a"
  ]
}
'

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'KetaPay-Customer-Token': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({statement: '<string>', files: ['3c90c3cc-0d44-4b50-8888-8dd25736052a']})
};

fetch('https://api.ketapay.com/v1/chargebacks/{id}/evidence', 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.ketapay.com/v1/chargebacks/{id}/evidence",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'statement' => '<string>',
    'files' => [
        '3c90c3cc-0d44-4b50-8888-8dd25736052a'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Idempotency-Key: <idempotency-key>",
    "KetaPay-Customer-Token: <api-key>"
  ],
]);

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

curl_close($curl);

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

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "object": "evidence",
  "dispute_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "submitted_by": "buyer",
  "statement": "<string>",
  "files": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "object": "file",
      "purpose": "agreement",
      "name": "Delivered designs.pdf",
      "mime_type": "application/pdf",
      "size_bytes": 123,
      "url": "<string>",
      "created_at": "2023-11-07T05:31:56Z"
    }
  ],
  "created_at": "2023-11-07T05:31:56Z"
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "parameter_invalid",
    "message": "buyer.phone must be a Nigerian mobile number in E.164 format, like +2348012345678.",
    "param": "buyer.phone",
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}

{
  "error": {
    "type": "authentication_error",
    "code": "api_key_invalid",
    "message": "This API key is invalid or has been revoked.",
    "param": null,
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}

{
  "error": {
    "type": "permission_error",
    "code": "customer_not_allowed",
    "message": "Only the buyer can release this milestone.",
    "param": null,
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "resource_not_found",
    "message": "No escrow with id 3b1f6c2e-8d4a-4e7b-9c1d-2a5f8e6b7c90.",
    "param": "id",
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}

{
  "error": {
    "type": "invalid_request_error",
    "code": "dispute_open",
    "message": "This escrow has an open dispute. KetaPay will release or refund it when the dispute ends.",
    "param": null,
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}

{
  "error": {
    "type": "rate_limit_error",
    "code": "rate_limited",
    "message": "Too many requests. Retry after the time in X-RateLimit-Reset.",
    "param": null,
    "request_id": "req_01J9ZK7M2Q4V8XW3B6N5T0R1YH"
  }
}