Why PSA

The source data wil be stored in psa after running the ip.
1) It can be used to reconstruct , if we delete the data in the cube
2)we can manipulate the data in the psa as per the requirement and then send to cube.
Is there any other use why we need to go fro PSA?
Thanks for all the replies

Hi,
Used for Staging purpose.
The requested data is saved, unchanged from the source system
The data format remains unchanged, meaning that no summarization or transformations take place
The temporary storage facility in the PSA also allows you to check and change the data before the update into data targets.
The PSA delivers the backup status for the ODS (until the total staging process is confirmed).
If you set the PSA when you are extracting data, you get improved performance if you use TRFCs for loading the data.
Regards,
Vishnu.

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