Verbs associated with "Incoming" and "Outgoing'

Hello

I have the following sentences:

"The message comes in component 1 and goes out of it after processing"
"Two flags are used to signal messages that come in the component and those that go out of it".

Incoming and outgoing are correct adjectives in this context, but using the verbal forms "come in" and "go out" seem awkward to me.

Any suggestions for better alternatives?

Thanks for any help

Thank you.