Transaction not yet indexed

ykW8rwzpNMfnUWHJYaGvoVBxuAtPu2ZHSDcqh4K6yxBLvwkj8Ymvyi4QPbJFqKHPfmb6eZibu8zw6adM8oEJfb7

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