There is already a variable named '%1'

Error constant SQLE_VARIABLE_EXISTS
ODBC 2 State 37000
ODBC 3 State 42000
Parameter 1 Name of the variable that already exists.
Severity 15
SQLCODE –261
SQLSTATE 42W15
Sybase error code 134
Probable cause

You attempted to create a variable with the name of another variable that already exists.