Examine with reasons, whether the following transactions are exempted under the Indian Stamp Act, 1899 : (a) A lease is executed and got registered. A second document is executed altering the terms of the first document.

Section 4 of the Indian Stamp Act, 1899 provides that, where in the case of any sale, mortgage or settlement, several instruments are employed for completing the transaction, only the principal instrument shall be chargeable with the duty prescribed for the conveyance, mortgage or settlement. A lease is executed and got registered. A second document is executed altering the terms of the first document. The second document has to be stamped as a lease. Section 4 does not apply.