Chris,
Generally you omit an attribute when it has no values, but for "printer-alert" I have also seen "code=other" being returned when there are no issues to report. The Printer MIB is similarly silent on the best practice here, so I think we should probably clarify this in an errata update.
Please bring this up on the IPP mailing list so we can discuss it at the next concall.
> On Mar 21, 2020, at 11:37 PM, Rizzo, Christopher <Christopher.Rizzo at xerox.com> wrote:
>> Mike,
>> I get a failure for printer-alert when running ipp-tests.sh because there are no alerts present in the printer and IPP printer-alert attribute is blank. Is it not supposed to be blank? I can't find in specs an explicit statement of what the value of printer-alert should be when there are no alerts present.
>> Thanks,
> Chris
>> Christopher Rizzo
> Xerox Corporation
> GDG/Discovery/Advance Technology
> 26600 SW Parkway Ave.
> Wilsonville, OR 97070-9251
> Phone: (585) 314-6936
> Email: Christopher.Rizzo at xerox.com>> "The realization came over me with full force that a good part of the remainder of my life was going to be spent in finding errors in my own programs."
> -Maurice Wilkes, Memoirs of a Computer Pioneer
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Michael Sweet