Transaction not yet indexed

28tt99xMPXUszqfCE3a69LwFcx6eNLQHcACT1WspSQyHALScL8mGCE9YAUFE5Tbykc3ti9i2JsSZFMvfKHoqb2Sm

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