Informal Documents: The deceased left notes, emails, or letters suggesting different wishes than those in the official Will.
Ambiguity: The Will isn't clear about specific assets or beneficiaries.
Questionable Capacity: Concerns arise about the mental state of the deceased when signing the Will.
Signature Issues: Suspicions arise that the signature on the Will isn't genuine.
Undue Influence: Someone may have coerced the deceased into signing the Will.