Transaction not yet indexed

MMjkkt4qJYSd8qNCYqCMyRev3m8k7h5A8ARswbzCvrY11hpQ1WaMCQdHeCzvSmDkYSZpaYRBdQ3NbKnoXifGW1Z

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