Troubleshooting?

It doesn't say much. What kind of damage or errors are you referring to?

I don't know much though, any network connection error and damage on a device, I think.

SupercatTroubleshooting

Troubleshoot already has the meaning of "testing to find a problem."
Normally, the problem is not damage, but malfunction.

Networks are designed with troubleshooting capabilities, so that malfunctioning components or broken connections can be isolated and replaced.

Try: troubleshooting network connection problems.

Or, how about not using troubleshoot, for example, 'Damage and error handling/management'? Do you have any good alternative?

Don't you need to mention "network" in your text?

Supercat'Damage and error handling/management'?

What do you mean?
There are systems for error reporting and tracking.
They help software developers because testers find and record the bugs, and then the developers find the root cause and re-write the bad code. The developers update the bug tracing system as they work to fix the errors.

Th

They broadly want to say all damage, error, and malfunction that are likely to occur on our network, PCs, other devices such as MFP. So I'm thinking now if it'd be better to list in a noun phrase like:
Troubleshooting/error and malfunction management

SupercatTroubleshooting/error and malfunction management

Errors and malfunctions are not, by nature, manageable.

You can have a system for entering, tracking and reporting malfunctions and errors. These systems are used by system administrators to dispatch technicians to troubleshoot and repair the problems.

When any error or malfunction happens, a sales office may dispatch a technician. If a user calls helpdesk, a helpdesk operator may instruct him or her. What do you broadly say those all actions for troubles?