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This article describes naming errors you may encounter when deploying a storage account.
Symptom
If your storage account name includes prohibited characters, you receive an error like:
Code=AccountNameInvalid
Message=S!torageckrexph7isnoc is not a valid storage account name. Storage account name must be
between 3 and 24 characters in length and use numbers and lower-case letters only.
For storage accounts, you must provide a name for the resource that is unique across Azure. If you do not provide a unique name, you receive an error like:
Code=StorageAccountAlreadyTaken
Message=The storage account named mystorage is already taken.
If you deploy a storage account with the same name as an existing storage account in your subscription, but provide a different location, you receive an error indicating the storage account already exists in a different location. Either delete the existing storage account, or provide the same location as the existing storage account.
Cause
Storage account names must be between 3 and 24 characters in length and use numbers and lower-case letters only. The name must be unique.
Solution
Make sure the storage account name is unique. You can create a unique name by concatenating your naming convention with the result of the uniqueString function.
"name": "[concat('storage', uniqueString(resourceGroup().id))]",
"type": "Microsoft.Storage/storageAccounts",
Make sure your storage account name does not exceed 24 characters. The uniqueString function returns 13 characters. If you concatenate a prefix or postfix to the uniqueString result, provide a value that is 11 characters or less.
"parameters": {
"storageNamePrefix": {
"type": "string",
"maxLength": 11,
"defaultValue": "storage",
"metadata": {
"description": "The value to use for starting the storage account name."
}
}
}
Make sure your storage account name does not include any upper-case letters or special characters.