When it created the remote loads, it setup to user defined which requires a coordinate system but it did not create the coordinate.
I am not sure if you can just set it to global where it would use the part file's default coordinate system.
I just checked the knowledge base and found out that it does use global, so yes you can edit the definition and change it from User defined to Global. You should also make sure the faces for applying the remote loads are correct. For example a pin going through two holes, but assembly was mated with pin concentric with one home only.
Also, there are no loads on your assembly, no gravity applied or downward force on top plate. Even if you do apply gravity, no materials are assigned to the parts, so they have no mass. You should also apply proper friction coefficients.
i introduce force in it , and choose global coordinate the wrong sign on remote load are removed , little bit confuse .please need more explanation .about these two lines
1) "For example a pin going through two holes, but assembly was mated with pin concentric with one home only"
2) "You should also apply proper friction coefficients."
thank you very much
Attach your file (pack-and-go) - if it is an assembly be sure to include all components.