If you want to use service availability management for your managed systems, you need to create service availability definitions for the systems (entities). In a service availability definition, you specify the following for the entities:
Agreed services times
SLA threshold and reporting period
The SLA threshold is the promised service availability of the entity in percentage for the reporting period.
Contractual maintenance patterns or dates
Contractual maintenance patterns are regular maintenance times for your systems. The time defined in a contractual maintenance pattern or date is a planned downtime and not SLA relevant.