Warnig: Call specified, but not found?

I often have this warning: “Call specified, but not found? Hangup on bad channel 0/14 on span 1”. Watching the log I notice that asterisk try to hangup the call using the channel "0:14-1 - “Hungup 'DAHDI/0:14-1” - instead of hunging up the channel 14-1 - “Hungup 'DAHDI/14-1”.
Is it normal?

Thanks in advance

Piero Ferarresso