1

City code from supplier context (one supplier)

Allows to specify city code of certain supplier and get excursion list only from this supplier. You can use this case if you know exact location codes from suppliers and would like to get excursions only from some supplier.

2

City code from GEO context (one supplier)

When the ExcursionCodeContext is "GEO.<supplier>" then the ExcursionCityCode must be specified in GEO context, and then the search request goes only to the supplier specified. So, you can send a request to the particular supplier, even if you don’t know supplier-specific City Code (as described in p.1 above).