Yes. To ensure that the latest details about the customer are available, banks have been advised to periodically update the customer identification data based upon the risk category of the customers. Banks create a customer profile based on details about the customer like social/financial status, nature of business activity, information about his clients' business and their location, the purpose and reason for opening the account, the expected origin of the funds to be used within the relationship and details of occupation/employment, sources of wealth or income, expected monthly remittance, expected monthly withdrawals etc. When the transactions in the account are observed not consistent with the profile, the bank may ask for any additional details / documents as required. This is just to confirm that the account is not being used for any Money Laundering/Terrorist/Criminal activities.