Re: Is it allowed to use double plural "warnings lists" constrtuction
I guess it depends on whether or not one such list would be referred to as a "warnings list". In my previous job, we had something called the "warnings index". If there was more than one, they would have been the "warnings indices". If it's generally called a "warnings list" in your terminology, then I would say that "warnings lists" is OK (if indeed you need to say "list" at all). If it's normally a "warning list" then the plural would be "warning lists".
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.