What's a Form 541?  A state estate income tax?

Or a state estate tax?

And what state?

California fiduciary income tax return.  I thought everyone knew that.  I just don't understand the question.  Maybe something was sold, and its value at DOD was less than the decedent's basis, and they want to take a greater loss.  

"California fiduciary income tax return.  I thought everyone knew that."

I'm dumb Bob. I think a few other states may also use 541 for this.

I also don't understand the question.

Well, maybe Louisiana.  But they're Napoleonic Code.