Import of goods data from external files

The task of "knowing together" of various data about the goods coming from external sources (in this case - in the Exel table format) is solved, and in different input documents the same position may have different names. It was necessary by pressing the button to open the file, to compare the positions in it with the positions in the reference base, and to transfer the quantity and price data to the corresponding column of the resulting table; to save the information about the date of each such transfer, the lines of the resulting table to group by two independent parameters (group and category).