Splitting this pick transaction is not allowed because lots or serial numbers are already allocated

Summary:

We are using WMS for our inventory transactions and integrated to Fusion. Movement Request Transfer created in Fusion and Print Movement Request Pick Slip Report ran to send the Pick Slip to WMS.

Once the Pick slip is generated, system automatically allocating the Lot numbers. If requested quantity is 3 then system allocated 3 quantity in Single Lot or multiple Lots based on available Qty.

When WMS pick confirm the 3 qty, it pick confirms only 1 in Fusion and pick slip get closed.

We verified the payload coming from WMS which has 3 different pick confirmation due to 3 different Lot. Once the first Lot pick confirmed then Pick slip gets closed and remaining 2 pick confirmation failed in middle ware.