I need to add shelves and bins and add bin barcode, is there a module for this or must it be developed?
As warehouse having a tree like structure, you can utilize it to specify bins, shelves. Use serial number to track items.
ref:
https://erpnext.org/docs/user/manual/en/stock/warehouse
https://erpnext.org/docs/user/manual/en/stock/serial-no
https://erpnext.org/docs/user/manual/en/stock/batch
Thanks, gotit.