Transaction not yet indexed

MpzUnu8f4BD6vzaxEgmQdKaQvZRsDh88DuujPMCrPFpxt733e9MRKooN5MNDZkDWygmttLNcgbaSgBxdhS3SkUv

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