Transaction not yet indexed

5C21PPCUzsFuPiQ5iUh4mACjApVPqEPGkQijQPeWEMtsNK4pHBKMUpYPRJYNUkqC4e5EJyG9V4Eek3xA5Wm1Qpzg

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