if not exists (select 1 
			   from CDN.KntKarty 
			   where Knt_Akronim = @Akronim) 
begin 
	select 2, 'Błąd: nie znaleziono kartoteki o danym kodzie'; 
end else 
begin 
	update K set Knt_Email = @Email  
	from CDN.KntKarty K 
	where Knt_Akronim = @Akronim;

	select 1, 'OK', Knt_GIDTyp, Knt_GIDNumer
	from CDN.KntKarty K 
	where Knt_Akronim = @Akronim
end