Error 503 when connecting HTTPS Target Server

[#1]

Hi,

I've created a new Target Server

{
  "host": "<HOST>",
  "isEnabled": true,
  "name": "<NAME>",
  "port": 443,
  "sSLInfo": {
    "ciphers": [],
    "clientAuthEnabled": "false",
    "enabled": "true",
    "ignoreValidationErrors": true,
    "protocols": []
  }
}

When i want to connect, i'got a 503 error

{"fault":{"faultstring":"The Service is temporarily unavailable","detail":{"errorcode":"messaging.adaptors.http.flow.NoActiveTargets"}}}

In the documentation, I saw that I had to add ssIInfo.enabled=true to activate the https connection between Apigee and my API but it doesn't work.

Do you have any idea?

Julien