SO Posting Invoice

When  invoices was changed status is : Deducted, after that I post into invoics status then errors show: 

Sales order: SO-360541

Item number: 11000333

Insufficient inventory transactions with status picked

Operation canceled

So that, I can not post this SO into invoice, who is have experience please instruct me anh how to solves this problem. 

Thank you very much 

Agus S.