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HarryBayer
Level 1
February 17, 2025
Solved

Update customers without email address

  • February 17, 2025
  • 1 reply
  • 485 views

Question if I use Import List to update existing customers it seems that I cannot use the Marketo ID to update fields of the customers.

I can only use the email address to update unique customers. However certain customers are imported without an email address so how can I use the Marketo ID to update the customer fields?

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Best answer by SanfordWhiteman

You need to use the API to lookup people by ID (or, in theory, by a custom field you guarantee is unique).

 

List uploads via the UI always lookup on Email.

1 reply

SanfordWhiteman
SanfordWhitemanAccepted solution
Level 10
February 17, 2025

You need to use the API to lookup people by ID (or, in theory, by a custom field you guarantee is unique).

 

List uploads via the UI always lookup on Email.

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