I completely agree with the other two answers. I will try to give my view, which does not come with the year-long experience of alephzero or kamran, but maybe it will be easier for some less advanced users (myself included) to relate better to it.
Regardless of whether you are using ANSYS or if you are doing analysis by hand it is (almost) always possible to replace a distributed load with a concentrated load. There are very exceptions of course.
However, it has been a practice for quite a long time to replace uniform or distributed load with concentrated loads that produce the same effect. So for example the following table has a lot of those replacements.
Although this is taken from the most basic static analysis textbooks, the same principles were employed when designing and predicting the first aerospace structures with FE. Back then, 3d elements or even shell elements were either scarse or non existent and the modelling of an airplane looked like the following image.
The key concept is understanding what you are trying to simulate and what behaviour to predict. E.g. if you are worried about global buckling of a structure then its usually ok to replace the uniform load with the distributed load. If on the other hand you are trying to predict the "bearing strength" of the material on a flat panel, then you are most likely going to get different results. I guess what I am trying to say, is that you need to understand what you are trying to do and the limitation of your tools.