How can I check whether my purchase request has been paid?

All users can check on the status of their Purchase requests on the Purchases screen.

Unpaid transactions remain listed in the table at the bottom of the screen as they are still regarded as active.

If the transaction is no longer listed here, it is likely to have been paid.

From the Purchase screen, use the radio button to select view 'All'. If you have the appropriate permissions, you can also select another user from the dropdown and view their submitted purchases.
Make sure you are looking at the correct year.
You can check the status in the right-hand column of this table. The tick icon confirms that the payment has been made. Hover over the icon to find out further details.

Note: When you have been paid, you will usually receive a payment notification by email, also called a remittance.

To help you better understand the Payments module as a whole, please visit the module overview page here.