Description : The item options are missing for some items on the PDP page.
Solution
For this issue must ensure the below steps has to be done.
1.To show an item option for an item, the item should be added to the corresponding item option record .
2.For example

3.Check which item options are missing . Search those options on the item field.
4.Add that options on the configuration record with its ID and do proper cache invalidation.
5.The options are showing on the PDP page of website.