Committed date appearing same as Document date in STO PO

Hello Experts,

We have a case in which the committed date in the STO PO is showing the same as the PO creation Date.

Need your help to understand why is this happening

Shipping details in the PO

Need to understand the reason of why the system is considering the Committed date as the PO Document date?

Is GATP has any role in deriving the committed date?

Regards,

Shailesh Mishra.