Transaction not yet indexed

4c15bfMn8M18GedgYPRJn7GL7aE3t1LQ45e2TM5CQieTLvfeKsrErDi8Z1FXsRo5zHDbnLNw7mT49uaRMmLD4u87

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