Smith,
PWG 5100.5 is an extension to IPP/1.1 that defines the Document object, the document-attributes-tag (group) value, and the amended semantics for the Send-Document and Send-URI operations. None of that was part of the core IPP/1.1 (which is what RFC 8011 defines) and we've historically been conservative about requiring support for the Document object extension - right now only IPP/2.2 and IPP INFRA require it and most implementations only support a single document per job anyways...
> On Mar 9, 2018, at 4:37 PM, Kennedy, Smith (Wireless & Standards Architec) <smith.kennedy at hp.com> wrote:
>> Hi there,
>> I've been fielding a few questions about Send-Document, and everybody is reading RFC 8011 (after I ask them to move to that from 2911). I just dealt with a question having to do with the 'document-attributes-tag' and Send-Document. I was surprised to find that in 8011 we didn't include mention of the 'document-attributes-tag' even though there are references to PWG 5100.5.
>> Is there a conscious reason why we didn't add that? Or was it an oversight and hence worthy of an erratum report against 8011? Cross-references such as this would help close the loop especially if it was listed as optional in 8011, which wouldn't change the normative requirements for IPP/1.1 IMO.
>> Smith
>> /**
> Smith Kennedy
> Wireless & Standards Architect - IPG-PPS
> Standards - IEEE ISTO PWG / Bluetooth SIG / Wi-Fi Alliance / NFC Forum / USB-IF
> Chair, IEEE ISTO Printer Working Group
> HP Inc.
> */
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_________________________________________________________
Michael Sweet, Senior Printing System Engineer