Transaction not yet indexed

121EmS5iSAgCPXtEivPpGgLqbqU2TeVYyEnhhfMMFgqeaiQELS19Unc4T4vxcxCF3W5s4AwmikG6H9LuBDyzS1Y

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