According to your sentence below, should write here :-
Sorry for mistake (this one is okay but if you wish to announce formal sentence (in case of buyer’s letter), this one was wrote by “I would like to apologize for my mistake”. And another sentence of Please review STOCK-AGING 19-06-2015 (Revised 2) again in attach file kha, if you write that please review revised stock aging as of 19-06-2015 as an attachment, this one will be better kha.