Fix(Configuration): fix mandatory parameters
Fix mandatory parameters
Sellers at 2021-12-13:
- AC Tours Group - [ACG]
- Exo Travel - [EXO]
- TourEast (Tourplan) - [TPET]
- ASA London - [ASA]
- Tahiti Nui Travel - [TTI]
- Flying Europe - [FLEU]
- Abbey Tours - [ABT]
- Asa Tours - [ASAT]
- Eurotur - [EURT]
- Res Solutions - [RSOL]
- TourPlan - [TPN]
- Private Safaris - [PSAF]