Check List Membership
Checks whether a lead is present in a list or not. Accordingly, the API response will be either true or false. You have to pass the “LeadId” and “ListId” in the API URL.
API URL
URL Parameters
| Parameter | Description |
|---|---|
| ListId | Unique identifier of the list. |
| LeadId | Unique identifier of the lead. |
Response
true or false
HTTP Response Codes
| Code | Description |
|---|---|
| 200 OK | This is the status code for successful API call. |
| 401 Unauthorized | The API call was made with invalid access credentials. Check your AccessKey and SecretKey. |
| 400 Bad Request | The message body on the request is not as per API specification. Make sure that content type is set to “application/json” and the JSON body has correct attribute names and structure. |
| 404 Not Found | The API could not be found. Please check the API signature. |
| 429 Too Many Requests | API calls exceeded the limit of 25 in 5 second(s) |
| 500 Internal Server Error | The API called failed. There could be many reasons for it. Check the exception message to get more details. |

