Transaction not yet indexed

MEF8bpLs6w3tQUdb1ZNJ4h46iJNyfihSA4ozVMg7rKhgMB67WAUCdBDKm5eeeFRhtTh3RkXykFmmnVmCQWPLx3Y

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