When the character Wasim Karachiwala was being interrogated, he mentions the year of Mumbai terrorist attack as 2007 instead of the original year 2008.
When the character Wasim Karachiwala was being interrogated, he informs Farooq that Ikhlaq Khan was 50 ft from minister Advani. Himmat Singh, being an intelligence officer, should have taken a cue from this information, resulting in the profile checking of all the personnel in the parliament at the time of attack (for the identification of Ikhlaq Khan).