name : initiate-vault-lock.rst **To initiate the vault locking process** The following ``initiate-vault-lock`` example installs a vault lock policy on the specified vault and sets the lock state of the vault lock to ``InProgress``. You must complete the process by calling ``complete-vault-lock`` within 24 hours to set the state of the vault lock to ``Locked``. :: aws glacier initiate-vault-lock \ --account-id - \ --vault-name MyVaultName \ --policy file://vault_lock_policy.json Contents of ``vault_lock_policy.json``:: {"Policy":"{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Define-vault-lock\",\"Effect\":\"Deny\",\"Principal\":{\"AWS\":\"arn:aws:iam::999999999999:root\"},\"Action\":\"glacier:DeleteArchive\",\"Resource\":\"arn:aws:glacier:us-west-2:999999999999:vaults/examplevault\",\"Condition\":{\"NumericLessThanEquals\":{\"glacier:ArchiveAgeinDays\":\"365\"}}}]}"} The output is the vault lock ID that you can use to complete the vault lock process. :: { "lockId": "9QZgEXAMPLEPhvL6xEXAMPLE" } For more information, see `Initiate Vault Lock (POST lock-policy) <https://docs.aws.amazon.com/amazonglacier/latest/dev/api-InitiateVaultLock.html>`__ in the *Amazon Glacier API Developer Guide*.