You can find more information about the sample data at https://data.reach-incubator.eu/dataset/sales-and-inventory-data/resource/4624b22e-8a32-4201-a34d-2a11d3808946.

TIME_KEY (numeric): Transaction day (YYYYMMDD) Hora_HHMMSS (charater): Transaction time (HHMMSS) TRANSACTION_ID_MASK (charater): Transaction ID mask CUSTOMER_ACCOUNT_NR_MASK...