Currently in odoo you can duplicate one record at a time, so this module useful to mass duplicate records from list view multi actions. you can select multiple records checkbox from list view and from actions menu you can click on mass duplicate.
1) One click multiple duplicates.
2) You can do this in list view of any odoo models.
3) Time saving.
1) You will receive the link to download the zip file of the module pls download it.
2) Extract the zip file, you will see folder named ‘sh_mass_duplicate’
3) Copy and paste this folder inside your Odoo Addons path / Custom Addons Path.