Transaction not yet indexed

21a6oDemG5bPhFvGdENbKpxUaGpAT8NeAm2sqL49RW2nQdgwCtpwsdthXH5c8yv4GYqpvp7TsajDxYTZrtBdFq2R

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