Application Loader - your apple id or password was entered incorrectly - iOS

Question

I am trying to upload an app on iTunes Store, I have not enrolled in apple developer account but my client give admin access to me as he has a developer account. I am trying to upload via Application Loader. I tried to signin with the app-specific password but I keep getting the error:

"Your Apple ID or password was entered incorrectly"

even though I am 100% certain that my credentials are correct.

After resetting my password, the problem persists. is anything wrong?

Consolute

I am using application loader that comes with Xcode, from open developer tool->Application Loader – Consolute

but if I tried with my password it's still not working. – Consolute

Answer 1

I had this problem while I was using my own Apple ID account. Although I was a team member and admin, Application Loader refused to accept my password until I assigned my account to be the Team Agent.

Hessler