How to stop a Purchase Order being send to Supplier

Summary:

Required to stop a Purchase Order being send to the supplier.

Content (required):

Business do not wish to disclose the total amount approved on the PO to the supplier which include the contingency line. Is there a way to generate the PO but not send to Supplier. Currently our workaround is to remove the email from the supplier when the PO is being generated but this workaround is not efficient. Thanks

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