Solved
Creating new fields with _ marketo is removing the _ in form
Hello,
I am creating fields that start with RF_fieldname,
When I go to the name, I can't edit it.

Why is marketo removing the _ from the field name?
Hello,
I am creating fields that start with RF_fieldname,
When I go to the name, I can't edit it.

Why is marketo removing the _ from the field name?
Why do you want the Label that is visible to the Lead to have a Database field name format? Marketo is going to reject that because it doesnt want to confuse the system.
Name=Database Name
Label=visible to Lead - this should be something in English.
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