Transaction not yet indexed

ME8NvyUkrusWZbSC7UQJyV2B3QxeJgPAELjqnFJqnRCbfMdm7cqrHfrdSwZq6pqPqTta7dEkFAcSsrpAmjCkAjS

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