let 
    Source = (anyCode as nullable any) as text => let
        TrimCode = try Text.Trim(Text.From(anyCode)) otherwise "PARSE-ERROR",
        MarkNulls = if (TrimCode = null) or (TrimCode = "") or (TrimCode = "0") then "NOT-PROVIDED" else TrimCode,
        Normalize = try Text.Upper(MarkNulls) otherwise "PARSE-ERROR"
    in
        Normalize 
in 
    Source