Transaction not yet indexed

21happ2zqPQfWvY9AEixbJRP3cDwBGQLsCdNMwTgnV2aEUYeqbiYfE4R16EfVMkWg5tQDZzWGcJBkiuVr2p1HVo6

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