Catalog Error

Can you one please explain about correct the catalog error?

Whoa!! That is a massively vague question, requiring a lot of assumptions.

I assume you're getting the cat error while running JCL. I assume you're getting the most common cat error under DFSMS; dupe dsn.
I assume you don't care what's in that dataset.
Assuming these assumptions are correct, you have to either code DISP=OLD or delete the dataset.

If you want a better answer, ask a better question.