Using FBDI, can we pass serial number when reserving an item against a sales order?

Summary:
The requirement is to reserve items, along with serial numbers, for sales orders when the shipping lines are in "Ready to Release" status.

Content (please ensure you mask any confidential information):

The requirement is to reserve items, along with serial numbers, for sales orders when the shipping lines are in "Ready to Release" status.

Volume: 20K

Using following FBDI, we can reserve items against sales orders but there is no provision to pass serial numbers.

File-Based Data Import (FBDI) for Inventory Reservation Import

We can reserve items, along with serial numbers, against sales orders using following REST but it is taking too much time to process (approx. 4s to process single line)? Batch Mode also give similar results.