Transaction not yet indexed

4c21Tvt5YG9bVP6SFf54kPiC5xTy4MZ29Rt8BRNoEcsCTnEF1EZPfZSmY6epGLXsTFgwkjtFotmK17j2kSTM2ABW

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