It is required to make the following application in the latex document: 
Buxu already at the stage of Cyrillic numbering:
\makeatletter \renewcommand\appendix{\par \setcounter{section}{0}% \setcounter{subsection}{0}% \gdef\thesection{\@Asbuk\c@section}} \makeatother does not give any result and constantly displays pdfTeX warning (ext4): destination with the same identifier (name{section.1}) has been already used, duplicate ignored . Using other character sets instead of \@Asbuk works (although incorrect links are formed).
The document has an extarticle class.
Maybe there are some ready-made recipes? If not, please tell me what to do.
