Transaction not yet indexed

Mt256e6ByYvRBiCm7H3ourpzkbbB9f5ZkzV19HiQg5FRHumh5pnyFbd2FeRTqT4wG9CfuHHSMSiQ6co1CR3JTSi

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