They are expected to conduct regular reviews to ascertain that the DBCs continue to fall within the designated business categories. Certain weaknesses were identified by the HKMA in this area. It was found that a PB had provided exchange service to non-DBCs and also exchanged Hong Kong Dollars for RMB for some DBCs. Some PBs did not conduct review of DBCs in a timely and comprehensive manner, while a PB did not conduct any review of DBCs that had not been granted credit facilities. These PBs have been required to strengthen their internal systems and procedures to ensure compliance with the requirements relating to DBCs. It has to be emphasised that controls in this regard is even more important with the expanded business scope announced in December 2005 since DBCs are now allowed to open RMB deposit accounts with PBs.