In this documentation, we can check how to create attributes in OpenCart.
1) Login to OpenCart admin panel.
2) Go to the tab ‘Catalog’.
3) Click the option ‘Attributes’.
4) Click the button ‘Add’.
5) Enter the details.
6) Click the button ‘Save’.
That is how we can create attributes in OpenCart.
If you need any further help please contact our support department.