Deeplink documentation is usually provided by the reservation system provider (ie. Amadeus, Sabre, Navitaire, etc) and is the same information airlines share with their Meta Search Engine Partners (ie. Google Flights, Kayak, Skyscanner, etc.) to send users to the airline’s booking flow. Good documentation typically includes sample deep-links and parameters definition.
It is important to inform PROS and share the proper documentation if there are different deep-link rules and variables for mobile, in case the airline has different booking flow by device.
Example of airTRFX page connecting to the airline’s booking flow via Deeplinks:
