Transaction not yet indexed

21a6NuWzcdstFqwSosEcyxud93A2E2hmcJt6BHCcrUHSpppACF9Qc8Ds7HxXceaE3UU538KZQJBbVST5ngnSUfVx

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