Split allocation not happening for a WIP Pick Confirm Transaction

Hello,

I am trying to process a WIP Pick Confirm Transaction through API. Though the transaction happens successfully I am having challenges when trying to perform partial pick confirmation.

Based on the pick confirmation quantity received from the vendor, I need to perform the same in Oracle. The partial pick confirmation does happen however allocation doesn't get split and move order gets closed.

I do not receive any errors from the api, returns a success message but doesn't provide the new record id for the split allocation. I have shared the code snippet below. It would be of great help if suggestions are provided to overcome this issue.