Transaction not yet indexed

1mpem2qMgYvRCvi1P2ec67Xt2fS8LphdbVpuAReta2e2oY8ihc4rjXeGifGn8AjizfdGxEiiarE1vk2iZu8XPbU

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