As you in the screen shots,
I'm trying to create inventory pick up documents from project module. I made sure from Inventory set up, numbering, location set up, the quantity i have balance, I tested once with bin mandatory in the location set up and once without with another location and everytime, I get this message "There is no thing to create"
In the location setup all options enabled and project consum warehouse enable inventory pick and the project planning line item with the location and there is item availablity be location.