Returns the batch prefix. See the box in the dialog in the Scan job description (accessed from the dialog).
Object.Prefix
Object.Prefix[= NewValue]
String
A change of the BatchDef Prefix is only useful in the ScanBatchDialogShow and ScanBatchDialogClosed events. See also StartNo property.
Note: If you change the BatchDef in the above events, you must use the SetReturnValue method in order for the changes to take effect.