Transaction not yet indexed

21nUMfMtGRJEaEaAbgvSvWanEgACJHCds5GRwDo5eai58WJsKeBhZezM2ogsbDSEkkEetCWE7QmL8DRxdZ8M6Upm

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