%% You should probably cite draft-ietf-httpapi-idempotency-key-header instead of this I-D.
@techreport{idempotency-header-01,
    number =    {draft-idempotency-header-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-idempotency-header/01/},
    author =    {Jayadeba Jena and Sanjay Dalal},
    title =     {{The Idempotency HTTP Header Field}},
    pagetotal = 13,
    year =      2020,
    month =     nov,
    day =       23,
    abstract =  {The "HTTP" Idempotency request header field can be used to carry idempotency key in order to make non-idempotent "HTTP" methods such as "POST" or "PATCH" fault-tolerant.},
}