Hi Harshitha,
If your query is about Karnataka PGCET Engineering exam, then

Here is the list of documents that are required during the Document Verification process-

Karnataka PGCET 2018 Application Form Print Out
Karnataka PGCET 2018 Admit Card
Candidate’s copy of Application Fee Challan
10th Standard or SLC Mark Sheets
 12th Standard or 2nd PUC Marks Sheet
Mark Sheet for all years/semesters of the qualifying degree
Degree Certificate/Provisional Degree Certificate/Course Completion Certificate
 Study Certificate (Only for Karnataka Candidates)
Two Recent Passport Size Photographs
So, yes you will need the print out of application form of Karnatka PGCET
Check the complete list of documents required- https://engineering.careers360.com/articles/karnataka-pgcet-counselling

During the reporting at the help centres, you will have to submit your original documents along with a set of photocopies (attested by a Gazetted officer) for verification.

You can ask if you have any other query.
Good Luck!