## List External Mappings

### cURL

```
curl --request GET \
  --url https://api.m3ter.com/organizations/{orgId}/externalmappings \
  --header 'Authorization: Bearer <token>'
```

### Python

```
import requests

url = "https://api.m3ter.com/organizations/{orgId}/externalmappings"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.text)
```

### JavaScript (Fetch)

```
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

fetch('https://api.m3ter.com/organizations/{orgId}/externalmappings', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
```

### PHP

```
<?php

$curl = curl_init();

curl_setopt_array($curl, [\
  CURLOPT_URL => "https://api.m3ter.com/organizations/{orgId}/externalmappings",\
  CURLOPT_RETURNTRANSFER => true,\
  CURLOPT_ENCODING => "",\
  CURLOPT_MAXREDIRS => 10,\
  CURLOPT_TIMEOUT => 30,\
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,\
  CURLOPT_CUSTOMREQUEST => "GET",\
  CURLOPT_HTTPHEADER => [\
    "Authorization: Bearer <token>"\
  ],\
]);

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

curl_close($curl);

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

### Go

```
package main

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

func main() {

url := "https://api.m3ter.com/organizations/{orgId}/externalmappings"

req, _ := http.NewRequest("GET", url, nil)

req.Header.Add("Authorization", "Bearer <token>")

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

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

fmt.Println(string(body))
}
```

### Unirest (Java)

```
HttpResponse<String> response = Unirest.get("https://api.m3ter.com/organizations/{orgId}/externalmappings")
  .header("Authorization", "Bearer <token>")
  .asString();
```

### Ruby

```
require 'uri'
require 'net/http'

url = URI("https://api.m3ter.com/organizations/{orgId}/externalmappings")

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

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Bearer <token>'

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

### Response Codes

- **200**
- **4XX**
- **5XX**

### Example JSON Response

```
{
  "data": [\
    {\
      "id": "<string>",\
      "m3terEntity": "Account",\
      "m3terId": "00000000-0000-0000-0000-000000000000",\
      "externalSystem": "Stripe",\
      "externalTable": "Customer",\
      "externalId": "cus_00000000000000",\
      "version": 123,\
      "dtCreated": "2023-11-07T05:31:56Z",\
      "dtLastModified": "2023-11-07T05:31:56Z",\
      "createdBy": "<string>",\
      "lastModifiedBy": "<string>",\
      "integrationConfigId": "00000000-0000-0000-0000-000000000000"\
    }\
  ],
  "nextToken": "<string>"
}
```

```
{
  "message": "<string>"
}
```

```
{
  "message": "<string>"
}
```

### Authorizations

#### Authorization
- **Type:** `string`
- **In:** `header`
- **Required:** Yes

m3ter supports machine-to-machine authentication using the `clientCredentials` OAuth2 flow.

### Path Parameters

- **orgId**: (string) Required - The unique identifier (UUID) of your Organization.

### Query Parameters

- **pageSize**: (integer<int32>) Specifies the maximum number of External Mappings to retrieve per page. Required range: `1 <= x <= 200`
- **nextToken**: (string) The `nextToken` for multi-page retrievals.
- **externalSystemId**: (string) The name of the external system to use as a filter.
- **m3terIds**: (object[]) IDs for m3ter entities.
- **integrationConfigId**: (string) ID of the integration config.

### Response Format

**200**: application/json
- Returns the list of External Mapping entities.