Transaction not yet indexed

MPKPoGCM9WUzC6h6tKuruerZZLJHsHi7DJbrLkM1Z3MCPd4bLCZaiXj2CQ7ziQGKajVRfdw78mMHVvWUw6Umajm

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