Is it possible to generate payments for all outstanding accounts payable suppliers and pay them at once?

Yes, you can generate payments for all outstanding accounts payable to your supplier at once, acoduman.

Using the Pay Bills feature in QuickBooks Online, you can consolidate and settle your supplier's outstanding balances in one go.

Here's how:

1. Go to +Create and click Pay bills under the Suppliers section.
2. Select the Payment account.
   
3. Click Filters.
4. Choose the supplier under Payee and click Apply.
5. Tick the check box beside the PAYEE header to select all outstanding bills for that supplier.
   
6. Once reviewed, click Save to finalize the payment.

If you have more questions, feel free to revisit this thread.