The login ID '%1' has not been mapped to any database user ID

Error constant SQLE_LOGON_UNMAPPED
ODBC 2 state 28000
ODBC 3 state 28000
Parameter 1 Name of the login ID that is not mapped.
Severity 16
SQLCODE -313
SQLSTATE 28W09
Sybase error code 13698
 Probable cause