Transaction not yet indexed

1aNmTnZXVufXaoTAQwoa7NVgQKWg9pLiTgYaG1AuzB2MmhEgDCqkwuC3YPQSnSmkAi7RS3oi7vqCqbE7a1JbGB8

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