Missing value for attribute '%1' in service

Error constant SQLE_SERVICE_PARM_MISSING_VALUE
ODBC 2 State ERROR
ODBC 3 State ERROR
Parameter 1 Name of the invalid attribute.
Severity 16
SQLCODE –1023
SQLSTATE 42WAE
Sybase error code 13487
Probable cause

The service definition contains a USING, FORMAT, or GROUP attribute with a missing value.