Uploading users to userlist and deleting old ones at the same time

[Max Drobin]

It's very confusing that I can delete users from and upload them to the same userlist at the same time. What I will get when the process finished? If I start upload before deleting -  will all users be deleted or only the users that were in the userlist at the moment of starting deletion process? If I start upload after starting deletion process - will users be uploaded or they can be deleted too?

[Sreelakshmi Sasidharan (AdWords API Team)]

Hello Max,

Your understanding is correct. You can initiate the add and remove operations one after the other and the API will only apply that operation to the members available at that point. For instance, if you make a removeAll operation, it will remove all the items that were in the list BEFORE you called the removeAll. All the items added afterwards will stay. So in your case, at the end of the process, only newly added members will remain in your list. Please note that it can take up to 12 hours for the list to be populated with the final list of members. You can find the customer match considerations here. Let me know if you have any additional questions.

Thanks,
Sreelakshmi, AdWords API Team