Transaction not yet indexed

HeapKMDYUEFecj678cHYjrNrNo7jucBPuTHS8wr7t2YHVqYfsuDUkY3rYnMMey8XD5Z9QLuoXGHE4b2HcMv7eBH

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