(4)If any person against whom any such certificate is made objects that the contribution or sums claiming by the person who applied for the certificate are not legally due, or exceed the sums which the applicant could recover from him in a Civil Court as being payable in respect of his individual interest in the land, and if the Certificate Officer considers there is probable ground for such objection, the Certificate Officer may modify the certificate or, if he thinks fit, cancel the certificate and leave the applicant to his claim in a Civil Court.