Transaction not yet indexed

5uFFB6yyUnChSMQsEWXpeQd1a8BzmSvjcq63xaWQvHBeMPiDnMhZcCQzXmVaTdjr5eTz9M2SnKvP6vgsBp1iZ616

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