Your contacts' data is one of your most important assets, so you want to be able to keep it up-to-date and accurate. If you need to update or edit an the data you hold for an individual contact, you can do this in the Single customer view.
To edit a contact's data fields:
Go to Audience > Contacts.
Find and select the contact you want to edit. You can use the Search field to locate the contact.
Select the Data fields tab.
There are two sets of data you can edit for a contact through the Single customer view. Select the relevant folder:
Personal details: Displays First name, Last name, Full name, Email, Mobile number, Gender, and Postcode. You can also add notes to the contact record here.
Data fields: Any custom data fields you have created.
Learn more in Create, edit and delete custom data fields.
Find and edit the data in the field you want to change.
Select SAVE.