Variable '%1' not found

Error constant SQLE_VARIABLE_NOT_FOUND
ODBC 2 State 37000
ODBC 3 State 42000
Parameter 1 Name of the variable that could not be found.
Severity 15
SQLCODE –260
SQLSTATE 42W14
Sybase error code 137
Probable cause

You attempted to DROP or SET the value of a SQL variable that was not created or was previously dropped.