Tick security group "Purchase Helpdesk Ticket" to generate a request for quotation/purchase order directly from the helpdesk ticket as well generate a helpdesk ticket from the purchase order/request for quotation.

"Helpdesk Ticket" form view, press the "Create Purchase order" button to create a request for quotation/purchase order directly from the helpdesk ticket.

After that one wizard opens, select vendor, products, and fill other details then press the "Save" button.

Now, from the ticket, you can see generated purchase orders of that ticket using the "purchases" smart button.

So, from that purchase order, you can see tickets of that purchase order/request for quotation using the "Tickets" smart button.

You can create a helpdesk ticket from the purchase order/request for quotation using the "Create Ticket" button.

After that one wizard opens, fill the details and save it.

"Helpdesk Ticket" created.

You can see tickets of that purchase order/request for quotation using the "Ticket" smart button.

It opens tickets Kanban view.

Created ticket form view looks like this.

You can filter tickets purchase order wise.

You can filter purchase order ticket wise.

Goto user config setting, Enable 'Manage Products'.

You can select products for each ticket.

Ticket PDF report with the products.