Hello @ykr1314,

Once the content for the current date has been made available via DSS/TRTH,

you can request the changes, limiting by date either as HistoricalSearch as discussed in this question or by TimeAndSales change request as discussed in this question.

In addition, if you are flexible to set up this request as scheduled processing, instead of on demand requesting, and just retrieve the results via REST API, you may be interested in relative query request of one day ago. To learn more about relative query, please refer to PCN New Extraction Query Capabilities and review Relative Query section.