Why is my Target order not eligible for return?

I'm curious to know, why exactly is my Target order not eligible for return? I made sure to follow all the return policies and guidelines to the letter, yet I'm still facing this issue. Could it be due to the specific items I've purchased or perhaps there's a time limit I wasn't aware of? I'd really appreciate some clarification on this matter as I want to ensure that I'm able to return my order if needed in the future.