TO storage bin proposed u00BF?

I have a material with stock in storage bin 1, 2 and 3 that belong to the same storage type. The material picking strategy is F (fixed) and the material has the storage bin 1 setted in the material master.

I created a TO and it proposed to pick from storage bin 1 and 3, while storage 2 has stock ...

Have you idea why could be this happening? I checked the storage bin and it isn´t locked, the material has stock ... what other condition is working in storage bin determination?

thanks in advance