Max length of user identifier

We recently are adding apple signup in our app and in our db we have 50 chars as max length of user identifiers. i was wondering how long they can be on apple and whether we should tweak the max length on our side.

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nfallahi
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Does someone have the answer?

I used to get a user identifier from Apple that their max length was under 50 chars. in the past few months, I have gotten a small amount of user identifiers that are bigger than 50. is it fraud or valid users?

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mackover
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  • So, what was the longest that you ever got? Approx 53, 54 maybe?

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    raptron
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