What is an internal check?

I called the DIBP yestarday, and an officer told me that my case is under internal check. I uploaded all of my documents on 14th Oct, and they did not ask me to attatch any other files. On 8th Dec they called my HR to verify my work expirence. So is there anyone who knows what the internal check is?
Plz provide me the Dibp contact no.i an also sane situation
I m on the same boat. Waiting for grant😳 My HR got verification mail on 3rd Jan till now no update🙄
No Idea about what kinda checks these are internal/ external🙏🏻
Angie when did you got verification alert in ur HR? Kindly share ur timeline
Hi Plz provide the DIBP contact number, as I am also in the same boat