71 Pa. Stat. § 733-807
Whenever the court, in which the secretary has filed the account of an estate of which an institution in his possession was fiduciary, shall, in the manner provided by law, rule that there is a deficiency in the funds, property, or investments of such estate, or that the institution is liable to surcharge in respect thereto, the amount determined by such court to be due shall constitute a claim against the institution and shall be presented in the same manner as other claims, except that it may be presented at any time within six months after the appointment of a successor trustee or a substituted fiduciary of the estate and the adjudication of the account of such estate by the competent court. Such order or decree of such court shall be conclusive as to the amount due, except for the right of appeal provided by law. Any dispute as to the classification or order of payment of such claim, as distinguished from the amount, shall be adjudicated by the court in which the certificate of possession is filed.
If the existence or amount of any such deficiency or surcharge, or the liability of the institution therefor, is in litigation but undetermined at the time dividends for claims having no priority in order of payment over such claims are being distributed, the secretary shall, upon notice of such fact from the successor trustee or substituted fiduciary, withhold and set apart a sufficient amount to pay the proportionate dividend which will be due upon such undetermined claim if it is finally adjudicated in favor of the estate of which the institution was fiduciary.
71 P.S. § 733-807