**************************************- The action code is used
in connection with the action purpose to define what the action should be.
Actions can be very diverse. The purpose corresponds to the verb (Do, Create...)
whereas the code is the name defining on what the action should take place.
Other information may be required for the action to be completely defined. All
codes cannot be combined with all purposes. All parties will not implement all
combinations. Some codes are directed more to the providers of information and
some are more related to intermediate processing or to describe actions within
conditional or recursive statements **************************************- List
of Codes for data management **************************************- AddOn: to
specify search or detail or booking of additional add on (excursions, diners
...) Availability: alone, without price information (otherwise use
QuotedAvailability) Booking: (Create, Delete, Search ...) Description: to
retrieve long description that where omitted in the first transaction for better
efficiency. List: to retrieve lists in general (products, bookings, possible Add
On) Quote: (Booking/Trip) QuotedAvailability: (combine Quote and Availability).
Used only with Get/Sort/Filter **************************************- List of
Codes for processing management **************************************-
Alternate: to request alternatives Cache: some third parties may provide caching
feature. Instructions about Adding data to cache or excluding/including cache
data can be requested in the messages Duplicates: to allow filtering duplicates,
(in case of multiple sources for instance) Source: of the data. For filtering
sources (if cache only should be used or certain source types)
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