F1 visa is denied because I mentioned I have a sibling in US in DS 160 but actually he is my cousin.

[AnilaC]

I have mentioned that I have a sibling in USA in DS 160 of B2 visa which was approved in Feb 2023. I actually made a mistake as I am the only child and I do not have any siblings. He is my cousin.

I have applied for F1 in Dec 2023 and I mentioned the same in F1 DS 160 because I already made a mistake in B2 visa. 

In my F1 visa interview, I was asked if I have a family in US and I said no, I have a cousin in US. Immediately my visa was rejected.

Should I change the sibling to relative in new DS-160 application when applying again for F1 and is it fine if it differs from my B2 application which is already approved.

[pontevecchio]

Only Immediate relatives in the USA needed to be mentioned. A cousin is not an Immediate relative. You should get some guidance from the firm of Murthy in Chennai as applying again may have the same result.