Data exchange of settype COMM_PRFREEATTR
(1) in ERP, use tcode SM30, view name: MATERIALID, configure an external long material number for material created in MM01:
in my example, it is AAAAA
Once saved, it will be saved in table MATERIALID as below:
(2) download it into CRM:
This is what I observed in tcode SMW01:
Question 1: why I insert an entry in Material Identification including a external material number a