HTTP Status Code 423 refers to Locked. This status code indicates that the resource that is being accessed is currently locked and cannot be modified.
The 423 status code is often used in scenarios involving WebDAV, a protocol that allows clients to perform remote web content authoring operations. When a resource is locked, it typically means that a user or process has placed a lock on it to prevent other clients from making changes until the lock is released. This can help maintain data integrity by ensuring that concurrent modifications do not lead to conflicts or corruption. The response may include information about the lock, such as who holds it and when it is expected to be released.