AI-generated Key Takeaways
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The
user_identifier_sourcefield indicates the source of the user identifier when uploading from specific Google Ads services. - 
          
The
identifierunion field must contain exactly one of the listed identifier types. - 
          
Accepted identifier types include hashed email, hashed phone number, mobile ID, third-party user ID, and address information.
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Different Google Ads services accept different subsets of the available identifier types.
 
User identifying information.
| Fields | |
|---|---|
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                   Source of the user identifier when the upload is from Store Sales, ConversionUploadService, or ConversionAdjustmentUploadService.  | 
              
Union field 
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              |
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 Hashed email address using SHA-256 hash function after normalization. Accepted for Customer Match, Store Sales, ConversionUploadService, and ConversionAdjustmentUploadService.  | 
              
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 Hashed phone number using SHA-256 hash function after normalization (E164 standard). Accepted for Customer Match, Store Sales, ConversionUploadService, and ConversionAdjustmentUploadService.  | 
              
 | 
                
                   
 Mobile device ID (advertising ID/IDFA). Accepted only for Customer Match.  | 
              
 | 
                
                   
 Advertiser-assigned user ID for Customer Match upload, or third-party-assigned user ID for Store Sales. Accepted only for Customer Match and Store Sales.  | 
              
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                   Address information. Accepted only for Customer Match, Store Sales, and ConversionAdjustmentUploadService.  |