What is the 'Use Standard Price' field means in PriceBookEntry object?

Hi @Inbarasu G

, 

The Use Standard Price field on the PriceBookEntry object indicates whether the Price Book Entry is using the Product's Standard Price from the Standard Price Book.

For example, if a product has a Standard Price of $100 and you create a Price Book Entry for a custom Price Book with the same price, Salesforce can use the standard price as the basis for that entry.

In simple terms:

• True → The Price Book Entry uses the Product's Standard Price. 
• False → The Price Book Entry has its own price defined for that specific Price Book. 

This field is also useful when working with custom Price Books, because Salesforce requires a Product to have an active Standard Price before you can add it to a custom Price Book.

Hope this helps!