Update an existing lead

Supports non-destructive patches. Nested contacts cannot be updated through this endpoint -- use the Contacts API instead.

status: See status and status_id guidance on the create endpoint.

custom.FIELD_ID (optional): See custom.FIELD_ID guidance on the create endpoint. You can also unset a single field, e.g.:

{ "custom.cf_v6S011I6MqcbVvB2FA5Nk8dr5MkL8sWuCiG8cUleO9c": null }

If the custom field accepts multiple values, you can specify .add or .remove as part of the field key to add/remove a single value to/from a list of values, e.g.:

{ "custom.cf_v6S011I6MqcbVvB2FA5Nk8dr5MkL8sWuCiG8cUleO9c.add": "Wednesday" }

adds "Wednesday" to the list of values which already exist on the given lead.