Extrude

Cannot sweep or extrude a self-intersecting curve.

what i must do?

There is most likely a problem where two lines overlap each other when you created your pline. Explode your pline, use the OVERKILL command (if you have express tools installed), and try to pedit the segments together. If it still doesn't work you'll have to try and look for a duplication in the lines (i.e. two lines of the same length directly on top of each other.

You could also try to presspull or create a region and extrude that.

Cannot sweep or extrude a self-intersecting curve.

 

what i must do?

Attach the file here or the specifications of what you are trying to create.

Cannot sweep or extrude a self-intersecting curve.

 

what i must do?

You must be referring to the Pauli Exclusion Principle.

"It states that no two identical fermions may occupy the same quantum state simultaneously."

I recomend that you trace over your lines with a pline then try to extrude again