The article name "Customer" is same in both statements.

Example:

exec sp_article_validation @publication = 'Pub_keys', @article = 'KeyToken', @rowcount_only = 0, @full_or_fast = 0, @shutdown_agent = 0, @subscription_level = 1

exec sp_article_validation @publication = 'Pub_keys', @article = 'SymmetricKey', @rowcount_only = 0, @full_or_fast = 0, @shutdown_agent = 0, @subscription_level = 1