Transaction not yet indexed

21ztXzWtmMq2fL3CXbYnyZEXQVTZeZJMaoXeg3P2dGCqkdrL2WSPFdRSRpHUtob7oVvGcvU8ZenEFQRRjMY6Vosp

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