It may happen that identical keywords are generated for multiple products. Fortunately, you can decide what will happen with such a keyword thanks to a duplicate keyword strategy. You can find the setting in the keyword generators overview.
You can either keep the duplicate keywords (i.e. do nothing), delete them, or assign them to one product only.
If you choose the strategy of assigning the keyword to one product only, you can specify which product it will be assigned to. Should the value of the chosen variable be the same, the keyword will be assigned to the product with the lowest product_ID.
Visit our blog to read more about the strategy of duplicate keywords.