[slang] "Inconsistent key-definition" error

[Andrzej]

Hi,

I'm getting error "Inconsistent key-definition" in my application when
user presses ALT+INS key.
Since slang doesn't provide escape sequence for this key combnation
I'm adding my own like this:

SLkp_define_keysym( "^[^[[2~", SL_KEY_IC | ( 8 << 16 ) );

In file "slkeymap.c" I can see that this error comes from find_the_key
function but I don't understand what's the reason for it being thrown.
Can someone tell me what could cause this error?

Thank you!
Andrew