I believe Samsungโs integrity check has some problems with complex content names (special characters, spaces in the string, etc.), since the same content is suitable for Google Play and Amazon Store.
Samsung support was also small. Every time I asked for something, they just offer to rebuild and try again to publish the application.
So, in my case, a quick solution was to rename all the content to its hash value like this 0009220d9375b63041e22997fd6f52c5.mp3 . It wasnโt great, but it works.
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