If it is about a plate
- The plate — its number or its title. Both are at the top of every leaf.
- The round, and the count you got. “Round 6 gives me 26, the plate says 28.”
- Your hook and yarn, if they differ from the plate's. Tension explains more than it ought to.
With those, the round is re-worked at the bench and you get an answer. If the plate was wrong, the correction goes on the errata with the date, and you are told so.