What is meaning of ”SOURCE OF APPLICATION”

First, you have either typing or spelling mistake as well as grammar.
What is the meaning of "Source of application" in an application form.

I would interpret it as where did you get the application?
This is usually for marketing or hr department tracing the source.

SOURCE OF APPLICATION
申請 xxx 的渠道
例: What is the sounce of application for a export license in Hong Kong?

是伸請表格的來源或是招聘廣告的來源?

申請的來源 = source of application