Dear Niketan
I believe you are takling not about to create a "new" idnetificaiotn type or category. I believe you are talking about a so called "identification listing"
E.g. In CG02 header,, reference, inheritance and at many othere places you need to maintain (or see) specification keys. These keys are in daily business "useless" from user perspectice. We are talking in most cases about "chemistry" And chemistry you can describe by using "numbers" and "names."
The "INDEX" (nuber/name) is such an example. You can imfluence these listings.
Check: A5ttaching a Hit List to a new Specification Type
for similar discussion (I assume this is waht you are looking for)
C.B.