Warehouse task is not created for EWM pick up order

Hello,

I am trying to create direct OD in EWM Pick up out bound delivery scenario. It is successfully created in the system with no error. However, whenever I am trying to create warehouse task wrt this order I am getting blank screen. I am unable to create WH task. My doc type and all other setting are OK as I am able to create pick up order and replicate in ERP. When I am trying to create WH task I am getting green message as

There are no unpacked or packed warehouse request items for processing

When I check stock is already there in the system. May Know what could be issue?

Thanks

Milind