Hi kamran1331
Sorry for any inconvenience caused.
We only handle this field with the ATUM Multi-Inventory add-on.
If you don't have it installed or, if disabling ATUM keeps happening, it is probably a WPML conflict with WooCommerce, so you will have to contact their support.
In case you have Multi-Inventory, or it only happens when you have ATUM active, please let us know so we can investigate further.
Best regards.
Juan Antonio.