When you add a custom Automation Library to extend Incident Management data the rule to apply SLA values to an Incident fail to properly create the SLA data.
Execution results for Ruleset [OnIncidentReceived]
When the custom automation dll is executed the incident's priority information isn't getting properly passed to set SLA.
Symantec development has reviewed the issue and provided a fix. An updated Symantec.ServiceDesk.Im.Automation.dll has been created to address this issue. The file build # is 7.5.3000.170.
The fix for this issue can be found in TECH212326, along with all point fixes that have been released for ServiceDesk 7.5 SP1.
ServiceDesk 7.5 Service Pack 1