Use the modify prefixes in any of three ways: in the flags line in the audit_control(4) file to modify already-specified flags, as flags in the user's entry in the audit_user(4) file, or as arguments to the auditconfig(1M) command.
The prefixes in Table 1-3 along with audit flags, turn on or turn off previously specified audit classes. These prefixes turn on or off previously specified flags only.
Table 1-3 Prefixes Used to Modify Already-Specified Audit Flags| Prefix | Definition | 
|---|---|
| ^- | Turn off for failed attempts | 
| ^+ | Turn off for successful attempts | 
| ^ | Turn off for both failed and successful attempts | 
The ^- prefix is used in the flags line in the following example from an audit_control file.
flags:lo,ad,-all,^-fc