Huawei Technologies Huawei Cisco Systems, Inc. Extensions to the Path Computation Element Communication Protocol (PCEP) for MPLS-TE Label Switched Path (LSP) Automatic Bandwidth Adjustments with Stateful PCE are defined in RFC 8733. It defines the AUTO-BANDWIDTH-ATTRIBUTES TLV and a set of sub-TLVs for each of the attributes. The sub-TLVs are included if there is a change since the last information sent in the PCEP message. However, it lacks a mechanism to explicitly remove an attribute identified by the sub- TLV. This document updates RFC 8733 by defining the behaviour to explicitly remove an attribute.