Transaction not yet indexed

Mmm6JfKzmanHjVAQS5k3E7dn3ZkAzGHuZ7DVy7Fo53CGwEavACcqMjLeJ8DBVaMgUUAzKdnt2cKNVWEJkgMEKxZ

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