An "erroneous belief" is a mistaken or incorrect belief, one that is not based on accurate information or is contrary to the truth. It means believing in something that is wrong or false. Full definition
This is mainly because they have erroneous beliefs about what it means to refinance a mortgage. (mortgagecentresaskatoon.com)
Knowledge — A relationship can fall out of balance because one or both partners hold erroneous beliefs or are unaware of what a relationship requires. (odysseymarriageretreats.com)
Couples need to be aware of this reality in order to offset erroneous beliefs that what occurs early on in one's relationship is supposed to be the norm forever. (strengthenyourrelationship.com)