SPC090204: Do not implement SPJobDefinition (TimerJob)

The assembly should not implement the interface SPJobDefinition in gold environments.

Remove classes which implement interface 'Microsoft.SharePoint.Administration.SPJobDefinition' if timer jobs are not allowed.

The rule can only check for types that derive from SPJobDefinition. It cannot check if the timer jobs is deployed (either via PowerShell or via a FeatureReceiver). This can lead to fals positive results.Note: For customization rules it depends on the specific practices and guidelines of the target farm if the rules are valid or not. Disable the rule if it does not apply in your case.