Transaction not yet indexed

Dff7EcCpxXFBiviMspJ123NR9W3CkKJfYN2tDPQerEA2DM8hbSnvhVcM34SFG1nqLrAWz8X8RMt3oQz4uHW8ZK8

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