Transaction not yet indexed

55LjWUiSnAfwjYXJu7gq59MwPLSm9ACXPkF5CV31WeHeMMi9TvM6wuBZbqmZAg5a9R8JQtvyi57jTaPJcHj7Vg18

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