Firstly we need to add our custom field to the screen, for example we will use the Sales Orders screen and add Custom Barcode field to the Details tab.

For adding this field to mobile application with Barcode scanning functionality we should just update Details container on

the SO301000 screen and define the special attribute with value “BarCodeScan”.

Or in the form of text:

update screen SO301000 {

update container "Details" {

   add field "CustomBarcode"{

       formPriority = 1

       special = BarCodeScan

      }

    }

  }
After publishing the package we should be able to see our field with scanning functionality on the Sales Orders screen as shown below.