Transaction not yet indexed

ATu15RkBYFSg5xNRDe3BFrqUcGC9diHjsWGRZgmkbnFmGRcx16ju8WaeHrmiUkdNXNMqKxYx787ptEeJVCPSfv9

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