If you want to insert a UPC-A barcode in a template, then you need to insert a barcode element, where you select this as the barcode type:

The parameters are:

(The headers are links to the common description).

1. Data
   The data, that you want to put into the barcode.
2. Preview placeholder
   Here you can enter a text constant for the data, that you want to use for the barcode in the result view in the designer.
3. Height
   The height of the barcode.
4. Module width
   The width of the thin lines of the barcode. This is rounded to up to a whole number of dots in the selected output resolution (DPI). For the mime types, ZPL and Direct protocol the resolution/DPI is set on the printer and for PCL/PDF output the resolution is set on the template element in the template.
5. Error handling
   How InterFormNG2 should react, if the data used cannot be converted into the barcode e.g. because of unsupported characters.