API or interface table that will allow us to mass update the Supplier Note field on the Terms and Co

Hi ,

Does any one have an idea,  is there any API or interface table that will allow us to mass update the Supplier Note field on the Terms and Conditions of a Blanket PO. Please let us know how can we update this with out changing the status of the PO using script.

Appreciate any help on this. Thanks in advance.

Thanks