Unable to create BOM

Item has been created, and BOM has been set. The item I created cannot be found during BOM creation. You can create a routing. Bai cannot explain it. I did not solve the problem by asking my colleagues for help. Looking for a master at the head office, this is not done. A bom parameter is set in profile. Try again.

Are there some parameters that should be set correctly? If the English language is not good, start to Chinese. Open your laptop and select Chinese. Try again and go to the bill screen to create a Bom. Try again on the desktop. Turn off the ERP and open it again. Select English and enter bill. I don't know. I'm depressed.