Unable to force a Requisiton or PO to use specific Supplier using ASL by Category

Summary: We want to use ASL and force the system to use a particular Supplier for a category.

We create an ASL for a "Category" and for a Supplier Oracle. Then I created a Requisition for a different supplier and a PO with a different supplier. I never got an warning or error.

Am I missing any configuration?

I want to get an error during the Requisition or PO.

Thanks

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25c

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