problem in transfer order

Hi,

can anyone help me to resolve

While creating a transfer order based on the material document of storage location to storage location

I am manuaaly entering the storage bin and the section and the storage type

what ever the storage bin, section and the storage type i am giving i am getting an error message Storage Bin bb01-01-02 in storage type 001 does not exist

can anyone tell me how to check the new storage bins for that storage type to be used

Sunil