What is the "5-Won Mission" causing conflict between Toss and Naver?

This might actually feel a bit unfair to Naver.
[Biz Talk <High>] "What is the 5-Won Mission?"... Naver and Toss's 2-year conflict, will they clash during the National Audit? Daum | The Fact. Conflict escalated from POS integration issues during attendance check search missions; Toss ends Naver-linked rewards... Both companies to appear at the National Audit on the 12th [The Fact | Summary by Reporter Gong Mi-na] Are you enjoying the Hangeul Day holiday? It is a good time to take a break while enjoying the cool autumn breeze. This week in the economy and industry, corporate conflicts and consecutive security incidents have emerged as major issues ahead of the National Audit. Naver and Toss