Transaction not yet indexed

YBmkTSTDqK8a6G68YqPfhsmcUgJX6ZVJ4shfD1FZcS1d5RSemm3fXdRgsc4Mj6c2WmGAjuroTiQaF1oA2aW1j51

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