How can I restrict certain devices not to be discovered as part of agentless discovery in SapphireIMS?

Discovery, Inventory and Compliance Agentless Device Discovery
1

As part of discovery configuration rule, you have option to exclude devices to be discovered using exclusion IP list. You may define it using IP range or specific IPs. Please refer Discovering your Network (refer Exclusion Profiles ) to configure the same and use it as part of discovery rules.