The SR is raised based on the device type and the nature of the alert, not the contract type.
Under the SCH technical resources there is a document 'Smart Call Home Monitoring Details' that will help you identify if an SR is opened. The documnt provides specific details for each diagnostic, environmental, and syslog alarm by device. It should also show if an SR would be opened. The link to the document is:
SCH maintains a list of contract types that it considers to be collaborative. That list includes PSS and smartcare contract types.
When a device registers under a collaborative contract, SR creation is automatically switched off. Instead, SCH sends an email (PSR) to the partner's designated email contact. That way, we give the partner a chance to resolve the issue and decide when to raise an SR with TAC.