What is the membership life span for custom combination user lists?

[Yang]

Hi, it seems that for custom combination lists, either based on website visitors or CRM, do not show a membership life span in the AdWords UI. (It just says "membership" which can be open or closed, but no number of days.) I've checked with my Google rep and they said that for combination lists, the life span depends on the life spans of the base lists that make the combination list. Is that correct? What is the exact logic, i.e. is it just the shortest of the base lists or does the boolean logic of the combination list come into consideration.

Also, it seems that membershipLifeSpan is a field in LogicalUserLists (i.e. Combination lists) and I'm able to both read the field and even set the value via the AdWords API. Can someone let me know if that field is just completely ignored or does it actually do something, especially given the first part of my question? Specifically I'm concerned that we generally set our CRM lists to 10,000 day, effectively never expiring, but we also create combinations on top of those CRM lists and then associate campaigns to those combination lists. Can someone confirm that those combinations lists also will never expire, even if the membershipLifeSpan value on those lists are something lower than 10,000? (I tried also to set the field to 10K days explicitly and got an error, complaining the value is too high.)

Thanks!

Yang

[Nadine Sundquist (AdWords API Team)]

Hello Yang,

This is a tough one, and I don't know this one off the top of my head. Since this is more of an AdWords product-specific question, please also post on the AdWords Community forum. If they are unable to answer, then please get back to me. In the meantime, I'll also check with a couple of teammates to see if they know the answer.

Thanks,

Nadine, AdWords API Team

[Yang]

Hi, thanks for the reply. I've checked with the AdWords team and I think this might only be specific to the API since for custom combination lists, the AdWords UI does not display any membership life span values and there's also no way to change it either. I'm asking this question here only because this field IS available via the API. It seems to default to 30-days and I can change the value but only up to 540 days. It returns a value too high error if I try 10,000 days, i.e. no expiration.

Yang

[Michael Cloonan (AdWords API Team)]

Hello,

We're going to investigate how the membershipLifeSpan field works specifically for LogicalUserLists and I will get back to you as soon as I have more information to share.

Regards,

Mike, AdWords API Team

[Michael Cloonan (AdWords API Team)]

Hello,

The membershipLifeSpan field is ignored on LogicalUserLists. We are currently updating the documentation to mention this and avoid confusion in the future.

Regards,

Mike, AdWords API Team