Required fields will be indicated to the customer by a black or orange asterick to the right of the field name.
It is common for customers to miss these small astericks and be unable to Submit the form.
Recommendations:
At the top of the form, include a message such as "* = required field"
Add the phrase "(required)" in the field name
Add a note at the bottom of the form near the Submit button such as "If the Submit button is unavailable, please check that all required fields were completed."
Fields such as email addresses and phone numbers can be set for specific formats.
If the format is not followed, the customer will receive an error message.
Recommendations:
Add the format to the field name such as "Phone Number (NNN-NNN-NNNN format)" to help the customer get the correct format the first time.