Transaction not yet indexed

1MDN3D8dr7ijmFu2jzrEgRnp99sUfLF723jpDqKAGMu9ChMGbD4aQTzFjQ4fwf3LR9w6exc2x2AjGyFzdFUCAPW

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