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

Log Level: ERROR

## Description

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

### Possible causes

* 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

### Possible solutions

* 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