Does anyone know what the caveat below for the ktown4u aespa Official MD event from May 28 to June 3 means? What is “duplicated application”? Is it in reference to the other event (event 2) shown below it, or is it referencing the items one buys, or something else?

Does anyone know what the caveat below for the ktown4u aespa Official MD event from May 28 to June 3 means? What is “duplicated application”? Is it in reference to the other event (event 2) shown below it, or is it referencing the items one buys, or something else?