def remove_forbidden_keys(data):
    """Remove forbidden keys from data

    Args:
        data (list): A list of dictionaries, one per transactions

    Returns:
        list: A list of dictionariess, one per transaction, with forbidden keys removed
    """

    # There are different forbidden keys based on the report requested
    forbidden_keys = ["customer id", "space/lpn"]
    new_data = []
    for row in data:
        new_row = {k: v for k, v in row.items() if k.lower() not in forbidden_keys}
        new_data.append(new_row)
    return new_data