Outbound / dont find the pick place

Dear experts,

maybe its a beginner question, but i didnt find the question here. Therefore i have to ask and i hope somebody can give me a solution.

I create some outbound orders. If i want to create the warehouse Task the System tells me that no pick place were is find.

<On the other Hand the sytem Shows the available stock.

I am sure that i configure the entries for the outbound in the right way.

Has anybody an idea where i have to search

Thx in advance

Kai