During document verification , you will have to submit details as mentioned in your admit card or application form.So, I will suggest you to keep a copy of the documents to submit during registering.You will need to take the original copy of the following documents during the verification:

NEET PG Admit Card 2019 issued by National Board of Examinations (NBE).

NEET PG Scorecard 2019 released by NBE.

MBBS 1st, 2nd and 3rd professional examinations mark sheets.

Internship completion certificate stating that the internship was completed by March 31, 2019.

Permanent/Provisional Registration Certificate

Class 10th pass certificate/Birth certificate as a proof of date of birth.

Valid ID proof- PAN Card, Driving License, Voter ID Passport or Aadhar Card.

Caste Certificate, if applicable
Diasability Certificate, if applicable

For any more information regarding the NEET PG counselling you can refer to the following link :

https://medicine.careers360.com/articles/neet-pg-counselling