External processing is necessary for podklyucheniyaniya fiscal record to the products of 1C (eg TiS).
With products 1C supplied processing services. Unfortunately, they are not finalized. For example (from personal experience)
during printing, check on the FF-FF Elwes To my clients out of paper. Cash shut up and did not want to sell even after charging roll. I had to call and run a test driver to do the necessary manipulations.
Since then, I use their further elaborated treatments which screened out most of these situations:

The end of the paper;
The end of the shift;
Cash in a test run;
Automatic selection of the belt width and otrezchika;
Cover is opened;
Print long names in a few lines;
and some other functions.

The file for external processing company ATOL fiscal registers and bar-M.