I also got this error, previous builds were ok. Pls, does anyone have a solution to help me out?

Same problem here. I try to add for external test and submit my app for Apple review and I got issue message "Some of the information required to submit your build for external testing is missing". I also checked "Test Information" all fields not missing any infomation. Some days before it ok at all.

Fortunately, early this morning, I try add the build for the external test and it work, show a green check and testing status. So happy. These days! I upgraded excode and like a buffalo trying to fix the new excode compatibility error, then add English language for test information. Yesterday, I remembered that I had just renewed my Membership, so I went to revoke the certificate, create a new certificate and add it to the profile -> Next build and then upload the build, then add it to the external test, unfortunately still having the error. And this morning I got lucky trying to add a random one. Wow wow it Ok, why? Someone help me? Surely the Most High understood and helped me.

This morning, I try add the build for the external test and it work, show a green check and testing status. So happy. I just renewed my membership. But the certificate expiry date has 8 days left, so I haven't revoked it. Yesterday I revoked and re-created the certificate, at that time I still couldn't add the build for external test, but this morning I add the build for external test normally. it works.