21820: Port Order: CC List must be an array of valid email addresses

One or more of the email addresses you provided is not valid.

• The CC (carbon copy) list contains invalid email addresses
• One or more email addresses in the CC list are missing or in incorrect format
• The CC field contains non-email values or duplicates

• Review the CC list to ensure all entries are valid email addresses in the format user@example.com
• Remove any invalid, incomplete, or improperly formatted email addresses
• Remove duplicate email addresses from the list
• Resubmit the port order with a valid CC list containing only properly formatted email addresses