Transaction not yet indexed

521sdhSLEowZtA2eacgCVtfXYjL8eDBEZSuS9v5CxXF7jhbZ5anYJGva9LgHwjXaxsM7VcQtfd8B7pLNtLiU2vuE

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