SRM 7 Get Shopping Cart using Purchase Order

Hi all,

Good day.

In SRM 7 System Classic Scenario, I could see an Approved Shopping Cart and that a corresponding Follow-on Document / Purchase Order was already created from the backend for it via Transaction BBP_BW_SC2.

In SRM 7 System Classic Scenario,  if I already have the Purchase Order, can you kindly provide the technical solution on how I can retrieve the corresponding Shopping Cart?  Can you please provide the BAPI/FM/Tables and procedure how to use them to be able to get the Shopping Cart?

Note: I have tried using BBP_PD_PO_GETDETAIL and entered the PO Number in I_OBJECT_ID but I'm not getting any result.

Thank you very much in advance for your inputs.

Best regards,

Brando