If an advertiser does not have a group, prefix or account set up (see Ad-ID Glossary for descriptions), we recommend that you use the set up assistant which will walk you through the entire set up process. See Using the Set Up Assistant for detailed instructions.
If you already have access to one or more of these items (group, prefix, account), you will need all 3 of these items set up and they also must be associated to each other, in order to create codes.
Within a group, prefix or account, there are links in the right side bar to add the other items. For example, when in an account, there is a link to add prefixes. You must have the appropriate permission to do these associations.
Customer service can assist you to make sure everything is set up properly.