Work Class Error during Sales Picking on Mobile device

Hello,

I am getting "Invalid Work Class ID" while picking the sales work on the mobile device in D365.  The Work Template is valid and the work class ID is same in both Work Template ID and Mobile device menu item "Sales Picking"

I am able to complete the "Pick" work but during the "Put" to Stage, it shows up the error "invalid work class ID". 

Any suggestions?

Narasimha