noun, する verb
When you sponsor an announcement, you're allowing those you're sponsoring to create some kind of notification for all those they want to get in contact with.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
A consumer credit company has been sending me notification letters over and over, demanding that I pay back my debt.