Transaction not yet indexed

NM21jaTn6SxyhXHM1aLd8khtHV2wX9VrHyLb5pV3pURZUXR87qo2eVAvvS8wP5zWdkCusY4fTrDc9oWE2sSuFZX

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