HI Jianbo, You can either use your option 1 (via ConstantDataService.getUserInterestCriterion() <https://developers.google.com/adwords/api/docs/reference/v201802/ConstantDataService#getuserinterestcriterion>) or option 2 (via this table <https://developers.google.com/adwords/api/docs/appendix/codes-formats#in-market-categories>) as both options should have the same data at the same time. However for the timing of the updates for this list, we do not have a specific timing for this. You are also correct that the list does not necessarily have the same timing on the release of an API version. What you need to do is just to regularly check the list via your option 1 or 2.
Let me know if you have further clarifications. Thanks, Vincent AdWords API Team -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/ https://plus.google.com/+GoogleAdsDevelopers/posts =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To post to this group, send email to email@example.com To unsubscribe from this group, send email to adwords-api+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/adwords-api?hl=en --- You received this message because you are subscribed to the Google Groups "AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. Visit this group at https://groups.google.com/group/adwords-api. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/12b4d778-605c-47a2-85c5-fbab91cada96%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.