Hi Joseph,
Not sure if you are still looking for a solution on this.
if you debug once you click on article you will see program calls transaction MM03 but table T130M stores reference to mm43 for mm03 transaction.
Please check below config in your retail system.
spro--> logistics - general---> material master----> assign screen sequence to user/article type/transaction/industry sector.
please if user names are mentioned in your system rather than *.
Good luck.
Anand & David Mckenna