PWG Candidate Standard 5100.16-2020: IPP Transaction-Based Printing Extensions v1.1 (TRANS) has been approved. This document defines extensions to the Internet Printing Protocol that support the business transaction logic needed for paid and quota-based printing through local and commercial services.
This and other PWG Candidate Standards can be found on the “PWG Published Standards” page at:
https://www.pwg.org/standards.html
https://ftp.pwg.org/pub/pwg/candidates/cs-ipptrans11-20200327-5100.16.docx
https://ftp.pwg.org/pub/pwg/candidates/cs-ipptrans11-20200327-5100.16.pdf