[A] To amend a punched SQ, go to the Quotations module and open the Request for Quotation (RFQ) for which the SQ was punched.
[B] Scroll down and click "View" for the SQ that is to be amended.
[C] The next page opens the SQ. Go to "OTHER ACTIONS" (1) and click on "Amend" (2).
[D] A page for SQ opens up. Make the required amendments and click on "Save and Send". The SQ has been amended.