New Delhi: Amid confusion among candidates after the launch of the system earlier this week, CBSE on Wednesday clarified that students applying for verification and revaluation of Class XII answer sheets are not required to have an account with State Bank of India, Canara Bank, Bank of Baroda or Indian Bank for making the payment on the board’s online portal. The board also said the portal was functioning smoothly despite a major cyberattack attempt on Tuesday, when the system was hit by denial-of-service attacks within minutes of its launch.The clarification came after several students alleged on social media that the revaluation portal appeared to be restricting payments to customers of these four banks.In a statement issued on Thursday, CBSE said that the portal uses payment gateways operated only by four public sector banks. “Candidates can use the available online payment options – UPI, Net Banking, Credit Card and Debit Card – through the specified gateway,” the board said.On the attempted cyber attack on Tuesday, which generated nearly 1.5 million hits on the portal within two minutes, along with over a lakh attempts at unauthorized file access, the board said its technical teams were constantly at work to maintain the stability and security of the platform.“The portal has accepted 4,924 applications for verification and 39,056 applications for revaluation (total 43,980) till 12 noon today,” CBSE said. It said that students should rely only on official CBSE communications for information about the process.The verification and revaluation facility was launched on June 2 for students who had earlier received scanned copies of their answer sheets evaluated under the new digital on-screen marking (OMS) system of Board-D.