Modifying Contact Data

Modified on: Wed, 4 Feb, 2026 at 1:32 PM

I want to modify data for one contact

To modify the data of only one contact, you can do it manually using that contact's profile.

I want to modify the value of several fields for several contacts

If you have to do more complex modifications involving several fields and several contacts, it is recommended to use an import file to do an update.

I want to modify the value of one field for several contacts

Option 1: Contact list

Go to the contact list and select contacts to modify with the checkboxes on the left. Then, click the button Multiple updates that appears in the upper right:You can filter the contact list with a search.

After, select the field to edit and indicate the new value for the selected contacts:

Option 2: Groups

You can also modify the data of contacts targeted by a Group. Go in the group edition and click Targeting: Then, you can select the contacts to modify:

Option 3: Custom tables

You can use custom tables to update contact data. This option is used to add or update the value of a field from a custom table for several inputs at the same time.

If you have a CDP structure, you must modify the contacts in the source project.

You could also add a default value for empty fields. This way, you don't have to manually fill out that value for every contact. For example, you could put the default value "English" for the Language field:For more info, consult the article on project fields.