First, you need to distinguish between a technically invalid (like mistyped) address, and a technically valid, but wrong address:
Bitcoin addresses are case-sensitive. Bitcoin addresses should be copied and pasted using the computer's clipboard wherever possible. If you hand-key a Bitcoin address, and each character is not transcribed exactly - including capitalization - the incorrect address will most likely be rejected by the Bitcoin software. You will have to check your entry and try again.
The probability that a mistyped address is accepted as being valid is 1 in 2^32, that is, approximately 1 in 4.29 billion.
You can learn more from the
original page on the Bitcoin Wiki (bitcoin.it)
So Bitcoin addresses come with some built-in validation mechanism that allows your Bitcoin wallet to reject technically invalid addresses. OP has used a technically valid, although mistaken address for the transaction.
If you accidentally send bitcoins to a wrong, yet valid address, the only thing you can do is asking the owner of that address (the one who generated it and got the associated key) to return the money. That's why OP posted here. Presumably the owner could be contacted and returned the money in the end (according to the blockchain).
If the owner of the wrong address cannot be identified, lost the private key that was generated with the address, is dead or not willing to return the money, then the bitcoins are lost forever.
