CRM API v2 AdWords GCLID Parameter

CRM API v2 AdWords GCLID Parameter

Hi,

I'm using AdWords Integration with Zoho CRM using a third party webform and can't manage to insert the "gclid" parameter via Zoho CRM API Leads endpoint (version 2).

I already checked the following articles:

Form submission works fine. On server side the gclid is correctly included in API request. The Lead is created successfully. All fields (system and custom) are populated correctly - except for GCLID.

My request looks something like this:

{
  "data": [{
    "Some_Field": "Some_Value",
    ...
    "GCLID":"A_VALID_GCLID_VALUE"
  }],
  "trigger": ["approval"]
}

The response is a success with message "record added".

Unfortunately the AdWords Integration documentation does not provide an example for API v2. Concluding from the comparison of API v1 and v2 (see 2) I tried the following names for that parameter:
GCLID
Gclid

Does anyone know how to fix this?