If the customer makes a transaction which is not related with his/her business.

If the identity of the customer is difficult to ascertain.

If the business activities are suspicious.

If the customer hesitates in providing his / her contact information.

If the customer hesitates in filling the forms necessary to be filled before making a transaction.

If the customer shows an urgency in executing his / her deal.

If the information provided by the customer is suspicious and ambiguous.

If the transactions are being settled against the negotiable instruments like cheques, demand drafts etc.

If the customer asks to remit payment in a country where there are strict financial rules, regulations and monetary disciplines.

If the amount to be dealt with is very large or is being brought into or out of the country into large amounts in one go or into many pieces.

If the transaction is asked by the customer to be structured in way that its proper reporting to the Central Bank of the country becomes difficult and it is done deliberately.