Transaction not yet indexed

21AkRKkfK4ZSXnPCs83TqzVC53pPumuMXy7hhBtGMBTTADZ7LEGs2ZXaBgx6XpcNpFRwGHpbUSexa8P7mFZ7qKAL

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