Create-Job client-error-bad-request: Bad job-sheets value "standard".

[LND-AH]

Hello
We have an issue to print on a remote printer from CUPS 1.6.3 / RHEL 7

Nothing is printed and we find this in error_log
Create-Job client-error-bad-request: Bad job-sheets value "standard"

CUPS console shows :
Défauts: job-sheets={job_sheets_default} media=unknown sides=one-sided

Months ago we had ( I had made a screenshot !)
Défauts: job-sheets=none media=unknown sides=one-sided

I tried to change options, lpoptions shows (server info hidden):
banner=false copies=1 device-uri=lpd://xxxxx/ZBMA030 finishings=3 job-hold-until=no-hold job-priority=50 job-sheets=none,none job_sheets_default=none,none marker-change-time=0 number-up=1 printer-commands=none printer-info=Zebra printer-is-accepting-jobs=true printer-is-shared=false printer-location=XXX printer-make-and-model='Zebra ZPL Label Printer' printer-state=3 printer-state-change-time=1724329215 printer-state-reasons=none printer-type=2265156 printer-uri-supported=ipp://localhost:631/printers/Zebra_MAR

Whatever the change, the CUPS console still shows " job-sheets={job_sheets_default} " and nothing is printed

/usr/share/banners folder is empty
direct printing, lpr, is ok

I am stuck
Thanks for your help if you have the solution
LND