We are exporting data for abnalysis to a third party and they are asking for a copy of our sourcecode logic.  Does anyone know what this is? and where I find this in RE 7?

I think they are really asking for Header information/explanation for each column of your export. Sourcecode logic I believe (correct me if I am wrong) is proprietary Balckbaud property so you wouldn't have access to it anyway.

I have seen sometimes where a company would ask for this if you were sending them a proprietarily (is this a word?) formatted report as opposed to an export using either delimited fields or fixed length data.

You can easily get the file layout (header) data by opening your export clicking file and preview Export File Layout

Hope this helps