%% You should probably cite draft-ietf-stir-identity-header-errors-handling instead of this I-D.
@techreport{wendt-stir-identity-header-errors-handling-01,
    number =    {draft-wendt-stir-identity-header-errors-handling-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-wendt-stir-identity-header-errors-handling/01/},
    author =    {Chris Wendt},
    title =     {{Identity Header Error Handling}},
    pagetotal = 5,
    year =      2021,
    month =     feb,
    day =       22,
    abstract =  {This document extends STIR and the Authenticated Identity Management in the Session Initiation Protocol (SIP) related to error handling for STIR verification services and how they feedback errors to STIR authentication services. Specifically, the use of a Reason header field and addressing scenarios that use multiple identity headers where some may have errors and others may not and the handling of those situations is defined.},
}