Hello,

No, there will not be any problem regarding the fact that you have done your graduation from open university because education in distance mode has become prevalent nowadays and due to the pandemic the entire education has become digital in one way or other, see in UPSC or banking or any other interview it's obvious you will be asked about your graduation subject, so prepare well in that regard, it shouldn't look as if you have pursued your graduation through distance mode and you're not well acquainted with your own area of studies, this might land you in trouble, but remember that if you reach to the stage of interview then you have obviously qualified the previous rounds and that shows your capability, and interview is more of personality test to know about your attributes, how capable you are of handling the job that you have applied for, so a decent understanding of business, economy and banking system say in case of banking exam is important, if you feel under confident regarding your profile that do something regarding this, as in explore options of pursuing internships, or doing work in part time basis, or even working for NGOs, whatever which interests you so that you can show the interview panel your diversity and how well you have utilized the time, other than this there isn't much to worry about, there have been many candidates who have qualified  government exams with distance education degree.