Transaction not yet indexed

AMmc2msJJVEh1hQNgmw1yUPNfzjx8Ga6rjU7smmmT1N2uEUFoiRFGE2tTNmvXGPfgj3MHYZMU9FGLbABCqV8nhK

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