Misconfiguration of inbound routing

I added a new inbound routing.
The routing was wrong
now i am not able to apply configuration changes, nor to delete that route.
what can I do

the displayed message:

Reload failed because retrieve_conf encountered an error: 1

exit: 1

Checking for PEAR DB…OK
Checking for PEAR Console::Getopt…OK
Checking for /etc/amportal.conf …OK
Bootstrapping /etc/amportal.conf …OK
Parsing /etc/amportal.conf …OK
Parsing /etc/asterisk/asterisk.conf …OK
Connecting to database…OK
Connecting to Asterisk manager interface…OK
[FATAL] SELECT * FROM incoming WHERE cidnum = “” AND extension = ““ISDN1” <567574>” AND channel = “” [nativecode=1064 ** You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘ISDN1" <567574>" AND channel = “”’ at line 1]