a- The security point where vendor comes in with supplies did not match the supply documents with actual quantities- lack of proper physical verification while in warding, and less quantities may have come into the store. Certain customers may have missed billing certain items before leaving the store- proper matching of bill with products did not happen. Staff purchase not monitored properly; frisking of staff while leaving the store not properly done. 

b -The security head and store in charge are accountable. They have failed to implement the necessary processes of security steps and standard operating procedures to minimize losses, wrong product entry, in store theft, etc. To cross check for possible lapses, the CCTV footages to be reviewed, registers checked, security staff deployment to be reviewed, physical match of stocks during in warding and billing, proper frisking of staff while leaving store, periodical rotation of security staff, staff training, security drill are the major steps to be taken.