To understand vs to figure out

I always knew that "to understand " is not used to get the meaning of sentence but is used just for the language comprehension

So my question is, in the sentence above which is the best between understand and figure out verbs?

"Given a requested resource list is interesting to understand/figure out if these resource have been returned or the server has returned an error"

Thanks in advance Dom

Figure out to me implies some investigation of the issue, whereas understand refers to the end result not the method.

In this instance I would suggest using 'determine'.

To figure something out is to achieve understanding by one's own thinking. One can also achieve understanding by reading, by listening to smart people's explanations, or by direct observation of something; I wouldn't use "figure out" to describe those situations.