Transaction not yet indexed

NAb8SVtzkFVa7R3aqeDwqctJm2yHcCmiDsfyzXJTGwMsvidgma7KSZBKwsWDWc4SvFuR8WSVsp4zbk3V5n9NKMN

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