Batch split in EWM INB of the Batch distributed from S/4HANA

The INB with 100 EA and Batch #1 was distributed from S/4HANA into Embedded EWM 1909. What is supplied by the vendor in actuality is Qty. 60 of Batch #1 and Qty. 40 of Batch#2.

I understand that Batch Split in EWM to work there should not be the Batch value and we need to use Batch Subitem to do the Batch Split. Since I already have the Batch#1, is it possible to do the Batch Split, without using the Process Code?