how to remove this error?

I am trying to assemble this body but getting error "Ignored constraint: the system of constraints is inconsistent or over-constrained" i am new and don't know whats wrong in it, please help me to understand and guide me if am doing wrong steps.
6 Answers

Over-constrained means that you have defined too much in the model.
For example, if you had a line that was 10cm long, and you placed a line at the midpoint, then dimensioned the line 5cm from the end, it would be over constrained. This is because the line is already at the midpoint, which is 5cm away, and doesn't need you to input a distance of 5cm.
Hope this helps with half of the potential problem.

upload all the files so that we can see all the parts. just the product will not show all the parts.