How can i update or change the barcode number mention in item alias for an exiting item master?

To update or change the barcode number mentioned in item alias of existing item master in BUSY, you can either change the item alias directly from item master or can use multiple alias feature and specify the updated alias in multiple alias window in item master. Please check both the scenario with relevant steps:
1. To modify the item alias in item master:
Step 1: Go to administration section then click on master option
Step 2: Click on modify to access the required item master.
Step 3: After access the item master in modify mode, update the item alias and save the master.
2. To use multiple alias feature for updating new item alias:
Step 1: Go to administration then click on configuration menu
Step 2: Choose the features and option then select inventory tab
Step 3: Enable maintain multiple item aliases feature and save the configuration.
Step 4: Go to administration section then click on master option
Step 5: Click on modify to access the required item master.
Step 6: After access the item master in modify mode, click on multiple alias tab display on bottom of BUSY screen and update the item alias there. 
Step 7: Save the master by click on save option.