[fix] User sales one serial number multiple time from the POS
[fix] User sales one serial number multiple time from the POS

indictranstech/erpnext,gsnbng/erpnext,gsnbng/erpnext,Aptitudetech/ERPNext,gsnbng/erpnext,geekroot/erpnext,geekroot/erpnext,geekroot/erpnext,geekroot/erpnext,indictranstech/erpnext,gsnbng/erpnext,indictranstech/erpnext,indictranstech/erpnext