Call-Async-Activity method in Pega 8.7.1
We have migrated an activity, which calls an asynchronous activity for loading some Data Pages, from Pega 7.3 to Pega 8.7.1 and it doesn't work in Pega 8.
It seems that the requestor used for the background processing uses the wrong access group (PRPC:Administrators), and it is not able to resolve some rules involved in the data pages loading.
It is not clear to us how Pega determines the Access Group to be used and how it resolves the rules in this context.
Can anyone give some help?
***Edited by Moderator Marije to add Capability tags***