It is unusual if you had a good review the previous year. I would hope that during the review they also discussed ways to make improvements. They should have had an action plan or something so you know what you need to do, by when, and what would happen if you can't improve. If I have someone whose performance is not up to standards, I bring it to their attention and will also try to work with them to help them improve. If things ever get to the point that I need to do a verbal warning on performance or attendance, I need to have documentation I can show to HR to prove that this is warranted.
Hope this works out for you. Let us know.
Hope this works out for you. Let us know.