The location in which your Barcode callable server is located is incorrect.
Callable services will usually be located in the application's root system (or in one of it's subsystems), as demonstrated in the documentation page and related Examples applications I referenced in my previous post.
Regarding the Barcode options, the options referred to in the template's note, refer to elements of a predefined data structure assigned to the <Options> trigger. You can find the structure by right clicking the <Options> trigger and selecting Show in repository, then drag the Barcode Options structure into your model, and add flow as in the following screenshot:
Thanks for pointing out the problem with the images on the site. They are now visible.
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