How to pass Planning Priority back to Source instance?

Hi All,

We have a requirement to pass the planned order priority back to the Source instance based on the End Demand that a Planned Order is pegged to.

Example, PLO pegged to a Sales Orders with highest priority and PLO pegged to Forecast or SS with low priority.

With IR-ISO setup, PLO will be converted as Requisition once released and there by an ISO.

Passing priority information will help the shipping team to decide which ISO that they need to ship first incase if any constraints.

I dont see any columns/fields available in MSC_PO_REQUISITIONS_INTERFACE table to pass priority information from release hook (through customization). I am checking if we can make use of 'Order Priority' (Demand Priority) or 'Source Order Priority' fields in PWB to calculate priority in a customized way so that we can pass to Source instance when released.