Transaction not yet indexed

21tkvTEL7VcbV79ohtauU66BN7ipQDkbTBDb5dtzMYwyeM5do3yNSNJLGZqwfuJj5JvRn98gNWVimZFf2VCq7eM1

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