How to bulk update interface source code column in Purchase Order.

Summary:

Delta PO's loaded in fusion via FBDI during data migration, were loaded with wrong value for interface source code column in fusion.

Our integration has a limitation where only those PO's having specific value for that column will be processed to other third party systems,

thus we want to update the interface source code column for these specific PO's. we unable to do so via webservice.

Kindly suggest an alternative to update PO's, we have a good number of PO's in production which need to be taken care.

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