What Protestant doctrines are refuted only by the Deuterocanonical books?

An answer to this question, [*How do Protestants make claims to follow scripture and ignore the traditions of the ancient church which produced the scriptures?*](https://christianity.stackexchange.com/questions/104738/how-do-protestants-make-claims-to-follow-scripture-and-ignore-the-traditions-of/104743#104743&:~:text=the%20Spirit%20is%20still%20witnessing,leave%20the%20Catholic%20Church) , concerning the difference between Protestant and Catholic Bibles, contains: > … the Spirit is still witnessing to Catholics about the canon. If the true canon is the smaller Protestant canon, then some Catholics would be persuaded by the Spirit to leave the Catholic Church, > … > Likewise, if the Protestant canon is wrong, then many people will feel the Spirit's witnessing to a larger canon. Another question, [*Which doctrines are based solely on the Deuterocanonical books?*](https://christianity.stackexchange.com/questions/7369/which-doctrines-are-based-solely-on-the-apocrypha) , is about doctrines that Protestants are missing out on by not accepting the Apocrypha, corresponding to the second case above. This question is about the first case: **What Protestant doctrines are refuted only by the [Deuterocanonical books](https://en.wikipedia.org/wiki/Deuterocanonical_books)?**