error Update() is too complex?

Is there a certain limit of line that you can use in a project?

I got this "Update() is too complex" error recently and had to trim down my code a bit and the error got away but my project will only increase with time.

I work with unityscript mostly and I had around 19 500 line in my main .js update function when this error would popup.

 

I don't know the answer, but 20 thousand lines in a single function is... well it probably means you should write it differently, 1000 lines is way too long.