It's always possible to withdraw a request for quotation as long as it hasn't been answered yet.

Here's how you do it

• Click the School admin tool from My apps.

• Click on Tools in the left-hand menu

• Click on Quotation request in the top menu

• Here you'll see the requests for quotations you've made and whether they've been answered or not. 

• Find the correct request for quotation and click on Cancel Request for Quotation.

• Confirm that you want to withdraw the request for quotation by clicking on Cancel Request for Quotation