India, May 25 -- A Delhi student who was trolled, abused and called a "Pakistani' on social media after flagging discrepancies in the Central Board of Secondary Education's (CBSE) new On-Screen Marking (OSM) system was vindicated on Monday after the board acknowledged that a technical issue had led to uploading an incorrect scanned copy against his roll number.

In an email to the student, Vedant Shrivastava, CBSE joint secretary (coordination) acknowledged the mismatch and said his marks would be revised shortly. HT has reviewed the communication sent to the student.

A senior CBSE official confirmed the error but declined to elaborate why the mix-up happened.

"We communicated to Vedant Shrivastava today and have sent the correct answer...