The phrase "salary requirements" refers to the amount of money you expect or need to be paid for a certain job or position. It is the salary expectation or the minimum amount of money you are willing to accept for the job. Full definition
After considering the reason for including salary requirement in your cover letter, you would like to avoid mentioning these details. (bestcoverletters.com)
Are they asking for salary requirements in addition to your resume? (topresume.com)
If you are asked to include salary requirements with your application, you could ignore the request, but that means you risk not getting an interview. (thebalance.com)