Payment declined, please check with your bank or use a different card

[AaaqiJamshi]

After checkout user goes to PayPal and then returns to the website with the following message: Payment declined, Please retry or use a different card My client uses the osCommerce CMS, and they integrated PayPal Direct for online payments.

Any suggestions? Like should we upgrade a code or there is may be some other issues?

[Jack_mcs]

The first thing I would do it to try an order yourself with your credit card to make sure the problem isn't exactly what the failure says.

If it also fails then I would suspect the module. The only reliable Paypal module for your version of oscommerce is called the Paypal App. You can see if it is installed by looking to see if there is a Paypal link in the left column. If not, I suggest installing it.