I compiled in this article all what you need about the SAP Material Master Data IDoc (almost all).
First, we will explain the structure of MATMAS IDoc for Material Master with the full list of Segment.
Then, you will find the list of the most important SAP Material Master IDoc BAPI and Standard Report.
The third part covers how extend SAP MATMAS IDoc. Finally, I collected some useful tips about SAP Matmas Material Master IDoc.