API: Field Meta Data - no result for "Approvals"

API: Field Meta Data - no result for "Approvals"

Hi there,
I just tried to use the meta data api to retrieve the list of fields from "Approvals".
However the response is just nothing.
My requests work with ALL other modules, but this fails:
https://www.zohoapis.eu/crm/v2/settings/fields?module=Approvals

Why?

Further I recognized, that the field Meta Data for "Activities" return multiple times a field "Tag"
Why?