In the case of the UPPCS examination, the primary focus is on the accuracy of the OMR sheet, as it is the official document used for grading. If you have correctly filled out your OMR sheet but mistakenly bubbled the serial number on the attendance sheet,your exam evaluation will not be affected as the OMR sheet is the primary document for recording your answers

Usually, the attendance sheet is used to verify your identity and ensure that the right candidate is associated with the OMR sheet. If there is a discrepancy between your attendance sheet and OMR sheet, it could potentially lead to complications in the verification process.

Here are few points regarding mistake:

Correct OMR Sheet: If your OMR sheet is filled out correctly and matches your answers, that is a positive factor.

Discrepancy: The mismatch between the attendance sheet and the OMR sheet could raise questions during the evaluation process.

Chalk Covering: Simply covering the incorrect bubble with chalk may not be recognized as a valid correction by the examination authorities.

Contacting Authorities: If possible, reach out to the examination authorities or the helpline provided by UPSC for clarification on how such discrepancies are handled.

Ultimately, while your correct OMR sheet is crucial, it’s advisable to keep all documentation as accurate as possible to avoid any issues. Ensure to follow up with UPSC if you have concerns about your specific situation.

GOOD LUCK...