How or once the amount get subtracted or moved in the purchasers paypal account towards the shop owner's account via Virtuemart in Joomla 1.5? I produced the paypal sandbox test account but does not appears to subtract the quantity of item(s) I purchased?

If there's anything unclear please allow me to in order to explain further.

Saying thanks to you ahead of time.

Possibly VirtueMart changes inventory only if it receives an IPN (instant payment notification) from PayPal in regards to a effective transaction? PayPal comes with an IPN simulator - use that. Also, you are able to login for your test business account and approve the transaction after that - this transmits an IPN to store.