Like any legal filing, an affidavit of heirship can be contested. Other heirs could come forward and disagree that you should receive the property, or complain that they are not listed as an heir on the affidavit. Another heir could also question whether you are actually related to the deceased person.A person contesting your claim can file an affidavit with the information they believe to be correct. This could include documentation, such as a birth certificate that proves their claims. The court decides who is telling the truth.