mdm workflow through sap r/3

hello experts

I have a scenario to trigger a workflow in SAP R/3 from MDM

Objects need to be created in SAP for this

I found this in a pdf file

"A pre-requisite for connecting SAP Business Workflow to MDM is to build a BOR Object which represents the products in MDM. But how does this BOR Object really communicate with MDM?

Using MDM ABAP API – Creating an ABAP code which communicates with MDM via MDM ABAP API (available as of MDM 5.5 SP3). Using the ABAP API directly from the Workflow environment simplifies integration between SAP Business Workflow and MDM, but makes integration to other systems more difficult as ABAP is not the greatest environment with regards to openness."

How do I go about it ? Where is this API and how do I use it ?