Transaction not yet indexed

Pmk18VNGcrSYbhki4TCSQt1Rp86NVYTYzkEDiXBTyu4J9c3A57J3dTfNuSQNkBd8e2kfb7hfTs1GaoiGTFhe7Pm

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