Raising this idea on behalf of a customer.

When a case with an active SLA is created, this also creates a respective SLA KPI Instance. After that a flow called SLAInstanceMonitoringWarningAndExpiryFlow to check the SLA KPI Instance record once its close to expiry (in 7 days for example). If we delete the case record in the meantime, once the flow runs, it throws an error that the respective SLA KPI Instance record with ID XXXX is not present (since it was deleted with the parent case record). We would like to have a more user friendly error message, so we don't have to check each individual failure of the SLAInstanceMonitoringWarningAndExpiryFlow.