Kit to Stock - unable to generate Kits in WC

Hi Experts,

I am trying process Kit to Stock scenario, starting with creating BoM in EWM first. I have created VAS Order and followed by Outbound Delivery and Inbound Delivery.

I have picked the components into Pick HU for ODO and this is available in Work Center.

Here I get the screen as shown below

Here I am doing "Start" and then "Generate Kits"...which is not resulting in any action.

My Pack Spec is created for Header material that has performing entity as "Warehouse" and it has kitting step as external step as given as last step in POSC.

In WC, what are the sequence of steps to be followed. Am I missing anything?

Please suggest.

Thanks.

Mahesh N.