We've encountered an "unexpected error" in our validation report. It is the only red error we have which may stop us from filing, and we are not sure how to fix.
This came about when we tried to fix a nesting warning message for an Axis, which had a member nested under it, and another member nested under that.
Once we made that change, we now have this "unexpected error" which is so much worse. We've tried to remove that whole Axis>>Domain>>Member and re-add to outline, but the error would not go away.