Terrain Editing Tutorial: Terrain Selling Points for Farming Simulator 17 (FS17) by PMC.
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HOWTO setup your terrain with grain / crop and animal goods sell points.
In order to make money you need to sell crops so where to sell them. Simply place unloadingStationFarm transformgroup, add unique name for gameplay -> IN -> triggerPos -> index, change xmlFile to point maps/ instead of $data/maps/, then write the index name into maps/map01.xml file as show below.
tipTrigger index="PMC_Grain_Elevator" stationName="PMC Sell Point 1"