OPIM error: Scaler, Symbols, or item code are missing for CHECK_VALVE:

I tried to follow this wiki, but it doesn't work for CHECK_VALVE

http://communities.bentley.com/products/plant/design___engineering/w/plant_design_and_engineering__wiki/21855.scaler-symbols-or-item-code-are-missing-for-tap-connection-error-message-when-branch-connected-through-stub-in-tapport

What do I do?