Can the supplier item be shown on the purchase requisition?

Summary:

I'm trading partner items to an item, I already associated it to a supplier organization

but when I enter a purchase requisition line, the related vendor item does not appear in the corresponding field

The vendor's item is only seen on the Purchase Order.

Is it correct for the system to do that?

Or am I missing a step?

I appreciate your help.

Version (include the version you are using, if applicable):

23B