Troubled debt restructuring
A troubled debt restructuring (TDR) is defined as a debt restructuring in which a creditor, for economic or legal reasons related to a debtor's financial difficulties, grants a concession to the debtor that it would not otherwise consider. As such, in order for a debt restructuring to be a considered a TDR, two conditions must be present: The debtor must be experiencing financial difficulties.
Source: Wikipedia — Troubled debt restructuring (CC BY-SA 4.0)