Transaction not yet indexed

RM7kpKRMkPBCnENBEfXa6aAuHp1eZZfTRGT5n9pqQqDpi2S73P6N1j2esC6ySUyPPRkPpC7hsUeQqLmzN8RV538

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