First, if the 1099-MISC is reporting an incorrect amount,
you should request a corrected form
from the issuer. This is especially
important if it is reporting more income than it should.
If the form is reporting less income than the total rent you
received, then you can enter the information from the Form 1099-MISC along with
an amount in the field on the page titled “Enter
Any Other Rental Income”. Then these two amounts together would report your total rent received.