Hi Shubham,
Thank you for reaching out. Please see
here for more information on creating a customer match list with an Advertising ID. As it says, you need to set the
uploadKeyType to MOBILE_ADVERTISING_ID and also set the
appId to the ID of your app. Please see
this example (also available in other languages) for creating a CrmBasedUserList. You just need to change the uploadKeyType and appId as explained above. When you upload members, make sure that the
mobileId field is set to the advertising ID.
Regards,
Mitchell
Google Ads API Team

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