Hello there,
I am new in Marketo. The client is asking if is possible to block the registration/add a message if the learner tries to fill in the registration form when actually he already sent his request.
Is that possible?
I know that even if the learner filled in the form twice he will be registered only once.
Thanks a lot for your help on this!
First, let's not use the term "form error" for this. Form errors are either at the network level or during validation of form values, while what you describe is a valid condition, just a form reality more than an error.
Anyway, I gave the answer in this recent thread on the same topic: https://nation.marketo.com/message/183947-re-validate-email-address-live-on-the-landing-page#thread-message-183947
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