Transaction not yet indexed

AkpknUTA5dBcL3LQWR7bBQZTQUAHu7365pjNhPhA9vJLvdAd2ff79oFpQStNaj31gy6AypZRsUTQHKMFS4w2Ljk

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