How to receive data from MII into SAP through a RFC call (in ABAP)?

Hi experts,

I'm starting to explore MII communication with SAP, and I was already capable of push (IDOC) and pull (RFC) information from SAP to MII and treat the information in workbench transactions on MII. I also was able to call a BAPI in MII BLS transctions, through JCO Functions, and change information on master data (e.g. changing MRP Controller for a given material).

But now I was searching how could I call a RFC in ABAP asking for data from MII (stored in persistent MDOs) and receive this data through parameters so I could treat it inside my ABAP program, and I'm not finding any useful information.

I am able create the function and insert the exporting parameters that will get to MII. I just don't know how to configure the workbench transaction so it can send the data, and the ABAP function so it can receive it.

Is it even possible?

Thanks in advance,
Tiago Cardoso