System could not determine source storage bin

Hello All,

I encountered above mentions error while creating Warehouse Task for Put away.

Scenario :- Trying to GR for Inbound Delivery created in ERP.

Steps : - 1.) Unloading for Inbound Delivery  in EWM

              2) GR before PUTAWAY

              3) Now trying to create WH task for PUTAWAY where i encountered below error.

Clearly we can see Source Storage BIN was picked from Warehouse Process type but still its not possible to create Warehouse Task.

I suspect ( tried some debugging) system is trying to find HU or TU no which is not there as i just created Inbound Del in ERP which got distributed and then processed it further as mentioned in above steps.

Let me know if i have to manually create TU or HU before or while doing unloading ?

Thanks

Inder