# identity/LineItemId #level100 #cur #finops #curfield This field is an identifyier that based on AWS is only valid for a certain day to connect data that is split on two or more files. It is mostly useless. ## Source - Category: [[Identity details]] - [AWS Documentation](https://docs.aws.amazon.com/cur/latest/userguide/identity-columns.html) ## Relevant Notes - This field plus [[identity_TimeInterval]] may to provide a [[Primary keys for the CUR]] ## Notes - Helps connect a single LineItem split over two files - An extreme case