After scheduling background jobs for collecting data in order to show them in Controller, the data are not available any more on the Controller's side after a couple of hours of successful collecting.
The manual launching of jobs was needed. After a couple of hours, the problem appears again.
Strict Security policies on a customer's side. The customer uses a Security weaver which serves to manage the system rights of users. It removes respective roles (eg. SAP roles, /DVD/APPD_ADMIN, /DVD/MON role) after the scheduled time.
Immediately after the role is removed, the Controller stops displaying data.
Security weaver
The customer has to change/manage a role assignment management for a respective user to prevent the manual job launching.
The role has to be permanently assigned to keep permanent monitoring.
ABAP agent 1904