draft-ietf-ipp-implementers-guide-01 says:
printer-resolution (resolution)
IF NOT any single 'resolution' value with a length equal to 9 octets,
REJECT/RETURN 'client-error-bad-request'.
IF NOT in the Printer object's "multiple-document-handling-supported"
attribute, copy the attribute and the unsupported value to the
Unsupported Attributes response group.
Shouldn't that last check be:
IF NOT in the Printer object's "printer-resolution-supported" attribute,
copy the attribute and the unsupported value to the Unsupported
Attributes response group.
?
-Carl