Transaction not yet indexed

NU6tmaD1MnRYWLnE1HXHAeqCJmWyckgRmBYc8ht3Yus4qN8xhyoR7D6tRLxAnaMxGbJrVEQB4zzQx8ngiFDkPcG

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