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-rw-r--r--app/models/group.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/app/models/group.rb b/app/models/group.rb
index 29df4144d03..75bf013ecd2 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -36,6 +36,7 @@ class Group < Namespace
validate :visibility_level_allowed_by_projects
validate :visibility_level_allowed_by_sub_groups
validate :visibility_level_allowed_by_parent
+ validates :variables, variable_duplicates: true
validates :two_factor_grace_period, presence: true, numericality: { greater_than_or_equal_to: 0 }