Transaction not yet indexed

MpM3XmTWbdiaDhJBxwxpLgAk3r5CddMJ3ftMe5dnaN6N7wsQkbCbyTCKM7X8k4Uk7CdJt2yPQx7SK4xtaNyTG34

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