Transaction not yet indexed

21NHKzc64UtFJsWm2dwP7cEGQKiBiJe7nGw3DL5G8B1Ni5RMpvkmH2vcGShNXPaS8mWyZCrWD1KxmSbxeq1pTvJt

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