Adding information via a web form to a data extension:

Using the below mentioned script, we are able to collect web form data into a DE. It works fine for a new user/email (email which doesn't exist already), however if the form is filled again using the same email, it doesn't update the data.

Script url: https://help.salesforce.com/articleView?id=sf.mc_es_demanager.htm&type=5

It's because of following code:

<input type="hidden" name="_action" value="add" />

If we change it to:

<input type="hidden" name="_action" value="update" />

then only 'update' works (updates the existing record) and not 'add' (doesn't add new record).

How can we do both (if it's a new email then add, else update)?

#AskAMCExpert #AskMCExpert #AskMarketingCloudExpert