Transaction not yet indexed

MuM3aGUkPBcu2uJpZZAwsMtzwCjhfh3hLAuPV6EFM4echHS7rNFUa7apQKXej2MRtC1Uhw2Q2msCHFaCLfewbRQ

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