Hello Vishnupriya,

If you have gotten a seat already through counselling in IISER then you do not have to fear. It is highly advised to keep original with you and at least 2 or 3 self attested copies of the documents you were told to carry for the admission procedure. Generally the document verification takes place in person. But again there might be uncertainty as IISER is a very big institution and the level of diligence it requires in every work you do matters to the people running the institution. If you are apprehended, apologise and calmly provide necessary corrections. Good luck!