[TYPO3-shop] What accounting System

[Bernd Schuhmacher]

Hello

I am in search for an accounting software that is working with tt_products.
It should be possible to import csvs created when an order is set in the 
shop by the system.
Orders should be connected to customer if customer is already in the 
system. If not customer should be created.

Does anybody know of a software like this?
How do you handle this?

Best regards

Bernd