I’ve created a couple of custom fields and now want to use the REST API to add a contact with values for the custom fields.
From the set-up it implies I can reference these fields with a leading _ e.g.
_customExampleField but when I attempt a request it leads to an error
unrecognized property: customExampleField
From other discussions in the community it appears I must instead reference the custom field using its id e.g. (per the REST API docs)
I’ve looked in the admin section where the custom fields are listed but cannot find any reference to the id. So my question is where can I find the id for my custom fields?