In order for DV to know where to publish the objects the inventory management system may include a list of desired sites with each object.
Use the API to query the available links to these sites. Please note that the available links will change over time, so it is important to refresh the list on a regular basis. Hexon adds new links for advertisers to take advantage of and also closes down links if sites cease operations.
For each site DV automatically determines, queues and performs the necessary action to reach the desired advertised state, using the following table. These actions are reflected in the feedback.
| Site selection | Current ad state | Resulting ad action |
|---|---|---|
| selected | not advertised | add |
| selected | advertised | update |
| not selected | not advertised | none |
| not selected | advertised | delete |
Every new selection or deselection will be merged with the current action. Where possible, the current action will be aborted to prevent unnecessary actions. For example, when a selection (resulting in an add action) is followed by a deselection (resulting in a delete action), the delete might cancel out the add.
To repost an advertisement, it is therefore best to perform a repost operation, instead of deselecting and selecting the object for the site.