Time limit for refund of CENVAT Credit set for service exporters; applications must follow prescribed filing timelines and documentation. Amends Notification No. 27/2012 to require applications in Form A with specified documents for CENVAT Credit refunds on exported services to be filed: manufacturers pursuant to the Central Excise Act time limit; service providers within a prescribed period from receipt of payment in convertible foreign exchange when service preceded payment, or from invoice issuance where payment was received in advance.