How to screen valid numbers in Japan? 3 practical steps to cut invalid data in half
When working in the Japanese market, many teams focus on channels and words, but ignore the most basic step: whether the number is real and valid. If the data source itself has many problems, no matter how good the operation strategy is, it will be difficult to transform it. Mixing empty numbers, outage numbers, duplicate numbers, and abnormal format numbers will not only waste access costs, but also affect subsequent judgments. The core goal of Japan's effective number screening is only one - to first clean up the obviously invalid data, and then talk about conversion.