関数・レファレンス

Checks stock for each cart item and each group item in a combo-set

Runs validation checks for each combo-set item in the cart (if applicable)

Check combo-set and group item divisions to ensure compatability

Checks validity of item charge types

Checks validity of item divisions

Checks for existence of the combo-set. Also checks for the existence of each group and item and checks that required groups have at least one selection.

Constructs an indexed error message for the cart page