AI-generated Key Takeaways
- 
          Enum describes possible customer match upload key types. 
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          CONTACT_INFOmatches members from customer information like email, phone, or address.
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          CRM_IDmatches members from advertiser-generated and assigned user IDs.
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          MOBILE_ADVERTISING_IDmatches members from mobile advertising IDs.
Enum describing possible customer match upload key types.
| Enums | |
|---|---|
| 
 | Not specified. | 
| 
 | Used for return value only. Represents value unknown in this version. | 
| 
 | Members are matched from customer info such as email address, phone number or physical address. | 
| 
 | Members are matched from a user id generated and assigned by the advertiser. | 
| 
 | Members are matched from mobile advertising ids. |