HDFC Bank on Tuesday informed the stock exchanges that the Reserve Bank of India (RBI) appointed an external professional IT company for carrying out a special audit of its entire IT infrastructure in the aftermath of repeated service outages at the country's largest private sector lender over the past two years. The bank shall accordingly extend its cooperation to the external professional IT firm so appointed by RBI for conducting the special IT audit as above," HDFC Bank said in a regulatory filing. Last month, HDFC Bank had submitted a detailed plan of action to the RBI to address repeated service disruption issues due to outages, saying it was hopeful of improving its technology platform in three months. Progress is being made on the plan of action provided to the RBI and the bank has taken this positively as it will raise the standard, according to a senior official of HDFC Bank. The action plan will take 10-12 weeks for implementation, and further time-frame will depend on the RBI's inspection. Based on the satisfaction level, the regulator will lift the ban, the official said at an analysts' meet. In December, the RBI temporarily barred HDFC Bank from launching new digital banking initiatives and issuing new credit cards after taking a serious view of service outages at the lender over the last two years. Monetary Policy watch, RBI likely to keep up status quo on rates RBI regulates operations of techfin firms like Facebook, Google, Amazon Having no responsibility to audit members of UPI ecosystem: RBI