Hi,
I do not think there is any standard setting which would make it possible to prohibit the creation of a WT because the stock is Q stock. Because why would you want to do that?
There is a BAdI "Termination of Warehouse Task Creation", guess you have to look into this one.
Brgds
Juergen
---
Want to learn EWM?
Check for EWM courses @ https://training.sap.com/curriculum/scm_ewm
Get a SAP Learning Hub Subscription: https://training.sap.com/shop/learninghub