Currently we can export a CSV file from purchase orders for upload to suppliers B2B platforms. Many suppliers support an order pad or quick order functionality which allows a list of partcodes and quantities to be entered to build a basket on a B2B.

It's possible to export the CSV file, and copy these columns and paste it into a suppliers website, however a step could be removed by adding an option to the actions menu 'Quick Item List' which shows a text box with the PO partcodes and quantities, this textbox should have a copy button which allows the list to be copied and pasted into suppliers order pad/quick order textbox.

Here is an example from QBP's B2B which shows the quick order textbox.