Before you add a new account, please check to see if it is found in Matrix via the Master List. The Master List shows all the accounts within your Market regardless to whom they are assigned.
1. Navigate to Lists
2. Select Accounts
3. Click Master List button on the top right.
4. Type at least the first four characters of the account name within the Search box (top middle of page) – Matrix will immediately bring up a list of Advertiser names that “contain” the text that you typed.
Keyword search: Account, Lists