Setting to prevent posting of subcontracts/POs if vendor is unlinked in Intacct

When posting into Intacct, the system's logic will attempt to link or create the vendor attached to a PO/Subcontract that has not yet been linked/does not exist in Intacct.

Can we configure the integration to prevent the creation of new vendors during the posting process? This ensures that if a vendor isn't already linked, the post fails instead of generating a new vendor record.