WEBAPI integration external apps - authorization error

Helllo All,

Designed appian webapi  and using this webapi as web hooks in external systems.   Successfully triggered webapi in  one external system ,but not working in other 2 apps(like cognito forms)

We are getting 401 unauthorized error for external sites. 

Please let me know  whether any security features need to be addressed within appian for each third party websites..   Thanks.

  Discussion posts and replies are publicly visible