Transaction not yet indexed

ac21m5qyBeSuiRKhjCbAtCJP48Dfuk7fdih1HihaT2AJN8LyLmyBKvmf76TUjd5TWDPrrdbK4wMELvajNtxDdxK

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