In the Variable Sources list applet, set the Path to:
$Current/Header/Price List Id
Uniform component and field names are defined by integration objects: ISS Quote, ISS Order, ISS Agreement, and ISS Asset.
Each of these integration objects defines the specific business components and fields that provide data for a generic value such as Line Item/Quantity. For example, ISS Quote integration component Line Item maps to the Quote Item business component, whereas ISS Order has the Line Item integration component mapped to Order Entry - Line Items.
NOTE: To expose a custom business component field in a variable map, you must first add it to the corresponding ISS [XXX] integration object.
The ISS integration objects associated with a particular business component are defined by user properties on the business component, for example: Instance Uniform Name EAI Object: [Business Object].
NOTE: Make sure that you create a user property for every business object in which the business component can be exposed.