Not able to create T1 import declaration for Bonded Warehouse

Hi Experts

I have completed the required configuration for Bonded Warehouse as below:

1) Created and assigned Custom ID to FTO in GTS

2) Created Custom ID and assigned to Plant and Storage Location in ECC

3) Assigned custom ID to product and flagged it for Warehouse procedure and distributed it to ECC.

4) Created authorization

Flow which we are following is provided below:

PO-->Inbound Delivery--> Custom declaration in GTS

We are creating import declaration with option as " Enter declaration Prior to Goods Reciept".

The requirement is to create T1 declaration ( duty free) but worklist of " Display Inbound Activities" of Transit Tab is empty, whereas worklist of " Enter Declaration Prior to Goods Reciept" is updated based on Inbound Delivery. We are even able to see out Custom ID in the worklist.

Can you please help me to know what I am missing. Please let me know if you require any additional information.

Thanks

Jaagrit Hooda