...If the same game is also released in Italy, and has an SIAE label on it, it is only [IT], and the other one without the label is only [ES].
I apologise in advance for my "engRish".
The problem lies in the SIAE label being applied, sometimes, on the external sealing of the game, it seems completely at random.
So I have games with the SIAE's sticker aon the case, and games without it; games where I personally detached the sticker and re-applied it once I removed the plastic sealing.
So, I think, it isn't solid enough to be considered for judgement of correct submission; in theory it is, but actually it isn't; it's just my opinion and I can't suggest a better way, so take it for what it is, just a point of view.
Where can we verify if there are multliple editions of a game for the same country?
I ask because I stumbled across a multi 4 entry of a game (with IT among them, back cover in 4 languages) but I own a copy with only italian on the back cover and I'm confident that it is the only edition actually sold in italy, in terms of base game standard edition (I went with submitting an IT version anyway).