BAPI_PO_CREATE1 - Get information from material master

Hi Experts,

Could you please help me? I'm a functional consultant and I'm evaluating the requirements for a development.

My doubt is regarding the function BAPI_PO_CREATE1, used to create purchase orders.

I would like to know what point exactly of the function BAPI_PO_CREATE1 retrieves information from material master. I mean how can I identify the function that the BAPI_PO_CREATE1 calls or line in the program used to check data from the material master to retrive information like description, material group, etc.

Best regards,

Rafael