The
AlreadyExists exception indicates that an attempt was made to create
an entity but the entity already exists. Typically the entity has a name or
identifier that is required to be unique in some context, but there is already
an entity with that name or identifier in that context.
Examples:
- Trying to create a new tag category when a tag category with the specified
name already exists.
- Trying to create a new tag in tag category when a
tag with the specified name already exists the tag category.
- Trying to
create a LUN with a specific UUID on a node (for replication purposes) when a
LUN with that UUID already exists on the node.
- Trying to create a file
in a directory or move or copy a file to a directory when a file with that name
already exists in the directory.