Swiss car dealer seeks industry solution

As a car dealer, I am looking for a suitable industry solution. I mainly deal in used cars, but I also sell a small number of new cars.

The software should meet the following requirements:

• Customer management
• Vehicle trading (inventory management)
• Transaction management (from invoices to correction documents)
• Cash book 
• Cash book compliant with the principles of proper management and storage of books, records, and documents in electronic form, as well as data access
• Open items with dunning
• Employee management with assignment of rights
• Document management per customer or per vehicle
• DATEV interface
• You can create customized sales contracts for sales to private individuals, sales to dealers, sales to EU dealers with VAT ID, or sales to third countries without VAT.
• Vehicles with differential taxation
• Print function for price tags with or without financing
• If you wish, the invoice for the sold vehicle is automatically generated when the purchase contract is created
• Purchase contract for private and commercial buyers
• Invoice creation with standard taxation or differential taxation
• Net invoice creation for EU customers with VAT ID or third countries
• Data transfer to the tax advisor via DATEV interface
• Print list of current vehicles
• Print list of vehicles purchased in a period
• Print list of vehicles sold in a period
• Do sold vehicles remain in the system?
• Inventory, inventory management
• Purchase solution (data carrier)

One software workstation is planned. The system runs on MS Windows 11.