If you look at how the rule-based workflow is built you will find that there is an escalation process that utilizes the value in the "Hours to complete" column. However, this process only sends a reminder for the same agents to act. However, this can be easily achieved by Extended Notifications. At the same time, it does not look at the SLA table whatsoever.
If you want to implement real escalation using the SLA configuration such that someone else is notified and assigned to process this, you have two options:
- Build an external background program that looks at each READY or STARTED workitem of type TS60807954. Then read the corresponding SLA and modify the workitem in the background using workflow API function modules (function modules that start with SAP_WAPI*).
- Build a sub-workflow template that you embed in the rule-based workflow.