Transportation chain in an purchasing info

Hello everybody,

For creating a seasonal Procurement I need the transportation chain for the scheduling.

I have to assign the transportation chain in the purchasing info, like SAP says in below.

SAP Help: "The transportation chains are assigned to a purchasing info record in transaction MM42 (Change Article) in the purchasing
view under Data per Vendor/Purch.Org/Site.

But I can’t find the transportation chain in my purchasing info. Do I need to configure the article Master Data in
the IMG to get the field?  If so, where do I have to start?

Thanks a lot in advance for your help

Kind regards

Marsha