NetSuite (or your SuiteScript backend) is preparing wavedata as a list of pick list groups.
Each group (each picktasks) likely has:
- One Order Number
- One Picker
- One Pick Type (e.g., “SINGLE” or “BATCH”)
- A list of line items to pick
These are grouped together into one picktasks object.
So the group is made based on whatever logic NetSuite or your script used to push data into wavedata.
Even though Order #2216 repeats, each has different picker assignments — so they become different groups.
That’s how NetSuite built wavedata — probably grouped by Order + Picker.