"Application materials" refer to the documents and information required when applying for something, such as a job or a college. It includes things like resumes, cover letters, transcripts, and references. Full definition
This is because, more than ever, people are sending job application materials through job websites or via email. (thebalance.com)
Potential employees, who make careless mistakes in application materials such as resumes, do not warrant the attention that a more careful candidate deserves. (thebalance.com)
Perhaps the hiring manager requested a cover letter or other application material in addition to your resume. (loftresumes.com)