The State Bank of India (SBI) on Sunday clarified that the facility of exchange of Rs 2,000 denomination notes up to a limit of Rs 20,000 at a time will be allowed without obtaining any requisition slip.It added that no identity proof will be required at the time of exchange either.The clarification seeks to quell doubts about the need for any form or slip at the time of exchanging or depositing Rs 2,000 notes by customers.