In case if you look at something in acumatica and want quickly to find sources of that window in resharper you can do the following:
1. click in the command line, and you'll see something like this:
just withoug red rectangle.
2. Switch to your Visual studio and navigate to page gl201000.aspx or gl201000.aspx.cs. In case if you have resharper in your Visual Studio you can navigate to file in a window like this: