Dear Lohit, for Karnataka Medical Counselling, after succesful registration and document verification, candidates were given a security key to use for choice filling. Only those candidates who had completed their document verification were given the security key. And the document verification is just a one time window that was open for both Karnataka and non Karnataka domicile candidates. If you have missed it, unfortunately you cannot get the documents verified again. It is not done for each round. It was done for all eligible candidates.

Please refer this links for neet counselling

For document verification you have to visit reporting centres.

Refer neet UG website for the documents list

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-counselling/amp

https://www.google.com/amp/s/medicine.careers360.com/articles/neet-counselling-faqs/amp

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