Failure to send sms

Hey,
I have a chateau LTE12.
Everything is working good but … Yesterday I tried to sens an sms through the router as usual and I got this log error : Couldn’t perform action - Can’t sens SMS with MBIM : FAILURE (6) (6)
Few minutes before this error, everything was working …
I did’n find any information on internet about this error.

But maybe le problem comes from the operator ?

Thanks,
Th

maybe of help: http://forum.mikrotik.com/t/cant-send-sms-with-mbim-memory-full/174068/1

Same problem but i can’t find any solution on the manuals nor the forums…

Try to turn on debug logging for lte and see if there are some useful records when sending fails.