"Object" Error in certain data records

@test_amrutha, I had a deeper look at your issue and could observe that your survey project had a total of 7 deployments.

Screenshot from DATA>Table:

Screenshot to capture the total number of deployments:

When I checked the the questionnaire from the first deployed version, I did not see the question Fulan.

But when moving on to the 7th version I could see the variable Fulan.

So this is the reason why you see some missing cases for this variable. If you had the variable form the very start you should not have lost the entries for the same but as the variables were added to the survey later on some cases are missed.