The RequiredItemPrice component, which appears in the Item Price stage of an order processing pipeline, verifies that the _iadjust_regularprice name/value pair has been set for each item in the items list.
Before the RequiredItemPrice component is run, it should have been initialized by the DefaultItemPrice component to contain the most current pricing information for the item.
If the _iadjust_regularprice name/value pair does not contain a value, an error is raised.
If you are not running the Pipeline Editor in expert mode, the RequiredItemPrice component is automatically inserted into the Item Price stage, but is not displayed in the Pipeline Editor user interface. This component appears in the user interface only if you run the Pipeline Editor in expert mode.