Transaction not yet indexed

RMmUNduER2tafkYYJuYtL1yZAW3tZN6QKb9GBRVX7u8csqoVQ3hZFpuQWzy2haRmNqdvvu7XWEaKeesvt9jdFeq

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