Transaction not yet indexed

cst8c15eFFydHbN4v59hdAU3RY1FXwiQWuvbrYZ1xvkFbxYhps9FJu5MwphC9FTGf3RdrYV9qLfkRFiiFiFbk66

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