Test a connection

curl -X POST '<baseURL>/v2/connections/testConnection' \
-H 'Authorization: Bearer <accessToken>' \
-H 'Accept: application/json' \
--data-raw '
{
    "connection": {
        "clientKey": "pqsDATA3lw12v5a9rrHPW1c4hET73GxQ",
        "href": "<baseURL>/v2/connections/ab5fc100-a0d2-49a0-87d9-1d4219a5d0a2",
        "ref": "ab5fc100-a0d2-49a0-87d9-1d4219a5d0a2",
        "name": "Promo Offer to Email Push and notif and SMS",
        "description": "Omnichannel publishing",
        "modifiedByRef": "343982bb-40e4-4119-bfab-144f65fb496c",
        "modifiedAt": "2026-09-14T20:`17:59`.737Z",
        "revision": 1,
        "archived": false,
        "auth": {
            "authType": "NONE"
        },
        "request": {
            "requestType": "POST",
            "connectionUrl": "<baseURL>/workflows/45aea1bb3c2845e8b4043e209c4456c2/triggers/manual/paths/invoke",
            "requestBody": "{\n    \"guest_sms\" : \"{sms}\",\n    \"x-brand-color\" : \"black\"\n}"
        },
        "inputMappings": [],
        "outputMappings": [
            {
                "label": "response",
                "outputReference": "message",
                "type": "String"
            }
        ],
        "customHeaders": [
            {
                "name": "Accept",
                "value": "application/json"
            },
            {
                "name": "Accept-Encoding",
                "value": "gzip"
            },
            {
                "name": "Content-Type",
                "value": "application/json"
            },
            {
                "name": "X-Brand-Color",
                "value": "{color-name-or-hex}"
            },
            {
                "name": "X-Guest-SMS",
                "value": "{sms}"
            }
        ],
        "urlParameters": [],
        "systemType": "DESTINATION",
        "connectionTimeout": 10000,
        "socketTimeout": 1000,
        "icon": "fad fa-sms"
    }
}'

{
    "statusCode": 202,
    "executionTimeInMilliseconds": 351,
    "request": {
        "headers": {
            "X-Brand-Color": "{color-name-or-hex}",
            "Accept": "application/json",
            "X-Correlation-Id": "0b79f2c2-2001-4131-80d2-df3936e19e78",
            "X-Guest-SMS": "{sms}",
            "Accept-Encoding": "gzip",
            "Content-Type": "application/json"
        }
    },
    "response": {
        "body": {
            "message": "cannot handle current output"
        }
    },
    "mappingResult": {
        "message": "cannot handle current output"
    },
    "connectionUrl": "<baseURL>/workflows/45aea1bb3c2845e8b4043e209c4456c2/triggers/manual/paths/invoke"
}