I'm reading the iTunes Connect Developer Guide as I'm trying to add a new application to iTunes Connect.

I'm a bit confused about the SKU number which I should provide. On page 81 in the above developer guide they provide an example of their data for their application Orange Ball.

They have chosen Orange_Ball_01 for the SKU Number. What is the 01 indicating - that it is version 1? Why use underscore? Why not just type “OrangeBall”, if that SKU is not used?


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