@EsKimo: Thanks for reply. I have cerated bundle ID for app and added "Network Extension" capability for that bundle id using the developer web site. Now here are my questions: Can I use NetworkExtension and EndPointSecurity in same system extension. Do I need to add EndPointSecurity capability in Apple web site? I have not found EndPointSecurity capability option in capability list at "Certificates, Identifiers & Profiles >> All Identifiers >> Review your App ID Configuration" Is this because my role is Developer? 3. Do I need addition step to use EndPointSecurity Api's? According to https://developer.apple.com/system-extensions/ this link, to use the EndpointSecurity API, I’ll need to request an entitlement from Apple. Is this step mandatory?

@eskimo Thanks for reply. Can I use NetworkExtension and EndPointSecurity in same system extension?

Not the same extension, but you can package an NE sysex and a ES sysex in the same container app. Ok. so I need to activate both the extensions at the installation time. it will become little bit complex, but I will try this solution as there are no other option exist.

Did you found any solution for this issue? I have come across same issue on 10.15.6 os. Is it possible to keep both Network extension and endpoint security extension in same container app?

Thanks meaton. I have not cerated provisining profile after adding NetworkExtension capability for my container application and extension. That time I have used Automatic signing and xcode creates provisning profile for me but now when I have tried to codesign the applications with Developer id application certificate it gives me profile related error. Do I need to create new profile for both applications?