I would like to challenge another failure (last one, hopefully) seen with our IPP printers at HP while running the IPP Everywhere Printer Self-Certification test suite.
More specifically, inside ipp-tests.test, it is expected that "job-preferred-attributes-supported" is returned as a boolean as part of a Get-Printer-Attributes response.
EXPECT job-preferred-attributes-supported OF-TYPE boolean IN-GROUP printer-attributes-tag COUNT 1
This leads to a failure like this:
I-9. Get-Printer-Attributes Operation (default) [FAIL]
status-code = successful-ok (successful-ok)
I could not find the definition of this attribute in a PWG specification. I used the IANA IPP Registrations link and found no results.
Did the test script mean "preferred-attributes-supported" which is also defined as a boolean?
When I used the internal Google search at PWG.org, I found a reference to "job-preferred-attributes-supported" on page 58 in PWG 5100.13:
"Printers indicate their support for this functionality by listing the Job Template attributes
that may be returned in the "job-preferred-attributes-supported" Printer attribute (section
This hints that it is a 1setOf keyword, a new kind of attribute...unfortunately, section 5.5.4 does not reference it.
Smith Kennedy had reported this typo in May 2013, but the path forward is unclear to me.
Thank you in advance,
Eren Rodriguez @ HP inkjet
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