| AclAlreadyExistsException | This exception is thrown when someone tries to create an ACL for an object identity that already has one. |
| AclNotFoundException | This exception is thrown when we cannot locate an ACL for a passed ObjectIdentity implementation. |
| ConcurrentModificationException | This exception is thrown whenever you change shared properties of more than one ACL of the same class type concurrently. |
| InvalidDomainObjectException | This exception is thrown when ObjectIdentity fails to construct an object identity from the passed domain object. |
| NoAceFoundException | This exception is thrown when we cannot locate an ACE that matches the combination of permission masks and security identities. |
| NotAllAclsFoundException | This exception is thrown when you have requested ACLs for multiple object identities, but the AclProvider implementation failed to find ACLs for all identities. |