Transaction not yet indexed

1MkS9pXUv5HPSGYDrS8zQXaF6TUM2a5NjtYGxMUvZRWHJ23FatSHpcaTTUEuo3EX7xYgdwcmQLdhCQfEkz7Tndx

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