Transaction not yet indexed

mb6jDBGn2ThfuNAHf85p3SCzxzRfd9CWHZJnyqbfrSzMAR3gqrtNmjUNyGqaesvaoeHKQ1ZjNMSPTSHYkth9pRT

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