Price Change Worksheet and Item Price in SIM

Hi Team,

We are using SIM 16.0.1 and would like to know the relation on below tables when we perform Price Changes in RPM and the same data flowing to SIM

1. Price_change_worksheet, Item_price and Mps_Staged_Message.

2. I can see two different statuses in Price_Change_Worksheet with 2 and 3. But I can see same item having two different statuses for two different business dates.

3. RegprichCre and associated item present in MPS and not processed successfully, the same item cannot be found in price_change_worksheet table.

Please explain in detail on above queries.

Thanks

Sravan