Sales order demand to be fulfilled by Single onhand lot in supply planning

Summary:

We have a requirement for sales order demands to be fulfilled by Onhand quantity belonging to a single lot.

When there are two lots of Onhand, LOT A satisfying the demand qty partially whereas LOT B satisfying the full demand qty, Supply planning uses up the LOT A first and the remaining demand Qty is satisfied by LOT B. This is causing the Sales order to be pegged to two different Onhand Lots.

Is there a way to define the Onhand consumption sequence or instruct Supply plan to use the Onhand Lot which satisfies the entire qty rather than splitting the onhand allocation.