Cash transaction more than 10000/-

Yes, you can accept, restriction is on expenditure not receipt up to  200000.

No person shall receive an amount of Rs 2,00,000 or more in aggregate from a person in a day, or in respect of a single transaction, or in respect of transactions relating to one event or occasion from a person, otherwise by an account payee cheque or an account payer bank draft or use of electronic clearing system through a bank account.

Accordingly, if you receive 12000 on daily basis then there is no issue as per my understanding.