Hello, I am trying to develop a reporting app with the pipedrive data. My clients need to get the amount of leads that have a certain channel source. To handle this I use the get Leads endpoint with a filter_id. To create this filter, i need the field_id of certain fields, for example add_time and sourceChannel fields. I can not find this ids anywhere. I understand that deals and leads have the same custom fields keys, but ids change and filters work with ids.
Where can i get this ids? I have multiple clients so i need to get the correct id for each of my clients for the given field. Is this id standard to all of my clients?
Thank you