Transaction not yet indexed

ykpn6dd95wmwvDwqQp3o7UiHEWxCNBAHcUpEvf3LtY5LF1QxvSpLHwnX4ehoWSpB4vuAD5CJxiMGjE4Yum4EMJZ

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.