Enumeration contains reason if account is not eligible for the review.

REVIEW_INELIGIBILITY_REASON_UNSPECIFIED Requesting a review from Google is not possible.
ONBOARDING_ISSUES All onboarding issues needs to be fixed.
NOT_ENOUGH_OFFERS Not enough offers uploaded for this country.
IN_COOLDOWN_PERIOD Cooldown period applies. Wait until cooldown period ends.
ALREADY_UNDER_REVIEW Account is already under review.
NO_REVIEW_REQUIRED No issues available to review.
WILL_BE_REVIEWED_AUTOMATICALLY Account will be automatically reviewed at the end of the grace period.
IS_RETIRED Account is retired. Should not appear in MC.
ALREADY_REVIEWED Account was already reviewd.