Supplier Organization type attribute on Requisition Approval doesnot work

Summary:

Supplier Organization type attribute on Requisition Approval doesn't work

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We are testing some approvals in Requisition based on the Supplier type. However the only attribute available in Requisition approval is Supplier Organization type. It seems that system does not identify this attribute as one of the condition when added. We raised an SR with Oracle and they said that it is not a valid attribute. Is there any other out of box attribute which can be used to validate the Supplier type in requisition approval?

We want to add a rejection rule if Requester selects certain type of Supplier on Requisition.