Final answer:
Resolution categories for closing a ticket due to lack of client action include 'No Response from Client', 'Client Unreachable', and 'Client Inactivity', indicating the reason for ticket closure.
Step-by-step explanation:
When closing a ticket due to lack of client action, the resolution categories should clearly reflect the reason for the closure and convey the nature of any client inaction. Typically, these categories include labels such as 'No Response from Client', 'Client Unreachable', or 'Client Inactivity'. This ensures any future review of the ticket will immediately highlight that the closure was due to the client not taking the necessary steps to move forward with the service request.
It's important for service desk agents to document this properly, as it provides valuable data for operational analytics and can aid in understanding client behaviors and system inefficiencies. It's also crucial in maintaining accountability and transparency in customer service operations.