def create_vault(accountId=None, vaultName=None):
    """
    This operation creates a new vault with the specified name. The name of the vault must be unique within a region for an AWS account. You can create up to 1,000 vaults per account. If you need to create more vaults, contact Amazon Glacier.
    You must use the following guidelines when naming a vault.
    This operation is idempotent.
    An AWS account has full permission to perform all operations (actions). However, AWS Identity and Access Management (IAM) users don't have any permissions by default. You must grant them explicit permission to perform specific actions. For more information, see Access Control Using AWS Identity and Access Management (IAM) .
    For conceptual information and underlying REST API, see Creating a Vault in Amazon Glacier and Create Vault in the Amazon Glacier Developer Guide .
    See also: AWS API Documentation
    
    Examples
    The following example creates a new vault named my-vault.
    Expected Output:
    
    :example: response = client.create_vault(
        vaultName='string'
    )
    
    
    :type accountId: string
    :param accountId: The AccountId value is the AWS account ID. This value must match the AWS account ID associated with the credentials used to sign the request. You can either specify an AWS account ID or optionally a single '- ' (hyphen), in which case Amazon Glacier uses the AWS account ID associated with the credentials used to sign the request. If you specify your account ID, do not include any hyphens ('-') in the ID.
            Note: this parameter is set to '-' bydefault if no value is not specified.
            

    :type vaultName: string
    :param vaultName: [REQUIRED]
            The name of the vault.
            

    :rtype: dict
    :return: {
        'location': 'string'
    }
    
    
    :returns: 
    accountId (string) -- The AccountId value is the AWS account ID. This value must match the AWS account ID associated with the credentials used to sign the request. You can either specify an AWS account ID or optionally a single '- ' (hyphen), in which case Amazon Glacier uses the AWS account ID associated with the credentials used to sign the request. If you specify your account ID, do not include any hyphens ('-') in the ID.
    
    Note: this parameter is set to "-" bydefault if no value is not specified.
    
    vaultName (string) -- [REQUIRED]
    The name of the vault.
    
    
    """
    pass
