The same parameters contained in the availability request (Single Property Availability or Enhanced Shopping) such as arrival/departure dates, number of guests, number of rooms etc
The specific rate plan code and room type code for the desired rate returned in the availability response. Note that the rate plan code in the availability response may be different from the one if the request (if sent), and so it is the code in the availability response that must be used in the rate rules request message.
Any rate qualifiers returned in the availability response for the desired rate, such as a corporate ID, should also be included.
It is recommended that the rate rules request be a mandatory step for the user before booking and that the response data be stored with the guest reservation. The rate rules information can reduce customer service issues.