Transaction not yet indexed

TMu9kihBpfLRbs1Q23WGsXw6SSg7n41S9EUKG72AvGZ1qBRGwZZ1b7sTRHeyKdKbqTgxYRSCTyU3CcsUjmD7Ss6

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