all, I am a new seller on Amazon India. I sell nighties. I am trying to create a listing of a nighty but running into problems. The “Apparel size system”, “Apparel size class”, “Apparel size value”, “Apparel size to range”, “Apparel size body type” a

Hi there. When listing products with size variations, always remember to go through the sizing guidelines that Amazon provides. As per your question, you are adding values that aren't even necessary. As long as you are not selling any product that is meant for special sizes, the only fields that you need to enter the size data are Age Range Description, Apparel Size Class, Apparel Size Value & Apparel Size System.

Your Apparel Size Value must match with the Apparel Size Class that you've chosen. For example, if your Apparel Size Class is Alpha, the Apparel Size Value must be S, M, L, XL and so on. Your sizes as you've mentioned are Alpha in nature but you are selecting the Numeric option which might be the culprit of the errors that you are facing.

Hope this helps. Good luck!