Hi, Thank you for reaching out to the Google Ads API support team.
You are using correct example that only you can create a new list through Google Ads API and not update an existing list. You may need to remove existing user list then add new updated user list. Listed in this section of our customer match guide are the ways you can initially remove the audiences. Later on once you have removed the previous audiences, you may then use the example you specified earlier, to add new audiences into your customer match user lists. You can also refer to the considerations listed here, where one of the items states : To completely replace the members of a user list with new members, order the operations in AddOfflineUserDataJobOperationsRequest in this sequence: 1. Set remove_all to true in an OfflineUserDataJobOperation. 2. For each new member, add a create operation setting their UserData in an OfflineUserDataJobOperation. Let me know if this helps clarify your concern. Thanks, Nirmita Google Ads API Team ref:_00D1U1174p._5004Q2h1wGQ:ref -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog: https://googleadsdeveloper.blogspot.com/ =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ You received this message because you are subscribed to the Google Groups "AdWords API and Google Ads API Forum" group. To post to this group, send email to adwords-api@googlegroups.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 "Google Ads API and AdWords API Forum" group. To unsubscribe from this group and stop receiving emails from it, send an email to adwords-api+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/adwords-api/k8auj000000000000000000000000000000000000000000000RMSDSY00FUGl2q6QRXOENJ9sNcd1Jw%40sfdc.net.