BADCONVSPEC

Message        <Context> this argument to <function name> contains a
               bad conversion specification "<incorrect conversion>"
               that will cause unpredictable behavior.

Description    The compiler has detected an illformed conversion
               specification (flags, width, precision, length
               modifier) or an unknown conversion specifier (not
               diouxefgcspn...) that will cause unpredictable
               behavior.  This might not have been what you
               intended.

User Action    Review the documentation for this function and modify
               the conversion specification as appropriate.