Telefonica Universitat Politecnica de Catalunya Universitat Politecnica de Catalunya ZTE Corporation This document extends PCEP to support Precision Availability Metrics (PAM) [RFC9544] for path computation. The optimization objectives for PAM computations are encoded using the Objective Function (OF) object defined in [RFC5541], allowing PCCs to specify precise optimization criteria for services with SLO requirements. And a PCE can report the statistical characterization associated with a computed path.