Not all errors can be corrected in the eanaliza.pl system. In these cases, user should correct the data in their accounting system, generate new balance sheet and profit and loss statement files and perform an analysis again, importing the results to eanaliza.pl system.
In case of warnings, system will provide some hints on the location of incorrect data, which does not have to mean that there are some errors in the input data. These warnings need to be checked and then either corrected or ignored.