Binance say XLM memo is wrong, but it is not.

I transferred XLM from coinbase exhange to binance, the switch took longer than regular, so i checked if i didnt make a mistake. Every little thing was right, however binance say the memo was improper so it was refunded.

Now i have to attend for coinbase to seek out and refund my coins since it went into the overall coinbase withdraw adress.

Not an enormous drawback, but how does this occur? I checked twice and pockets adress and memo have been both right.