Calling webhooks within the office.com domain from Usetiful is limited because of specific webhook requirements when the call is done from the client side.
Bear in mind these limitations of advanced settings:
1. The request type should be always "Post".
2. Authentication using the username and password is not supported.
3. There are limited custom request headers that can be set:
Accept
Accept-Language
Content-Language
Content-Type
with a value ofapplication/x-www-form-urlencoded
,multipart/form-data
, ortext/plain