Hi @Raghavendra Raghunath-Oracle Thank for your answer. Yes I enabled Employment Contracts subject area and I checked following tables but still don't see any history : DW_WRKFRC_CONTRACT_EVENT_EF DW_WRKFRC_CONTRACT_DURATION_D_TL DW_WRKFRC_CONTRACT_TYPE_D_TL That's the reason why I am trying to do a data augmentation. Is…