Using logon tickets to authenticate Enterprise Service

Hi,

I want to use logon-tickets for authenticating Enterprise Services.

(The same) Enterprise Services are called by a user (Person2Application using the Portal bypassing XI) or by an application (A2A using XI in between).

It seems I can authenticate P2A-consuming by using SAP Logon Tickets and A2A-consuming by using SAP Assertions Tickets (Principal Propagation).

When I create an Enterpise Service (SE80) I have to select a profile. What profile do I have to select in order to authenticate using both types of tickets?

Greetings Theo