As part of negotiations, networks often have pre agreed inventory reserved for particular advertisers. Clash management allows for an ad set to be selected from a list of submissions for a particular inventory based on its appropriateness for the position, rather than a first in, best dressed model.

Clash management applies to networks running a fixed tenancy model only.

Clashes are detected by Zitcha and must be resolved by a user belonging to the network organisation. Clashes occur when the number of ad set requests for any given inventory is greater than the available inventory.

Clash Components

Clashes are determined by comparing the properties of any given ad set with the properties of the corresponding inventory.

The determining ad set properties are:

• State: A representation of the status of an ad set in the media planning lifecycle.
• The combination of schedule, media type & placement: The determinant of inventory that ad set is intended to occupy.

The determining inventory properties are:

• Schedule: When the inventory is available.
• Media Type: What type of media the inventory represents.
• Placement: Where the media will be delivered.

Clash detection

Clashes occur when the number of ad sets with the same combination of schedule, media type and placement are in a Pending Approval state is greater than the number of inventory with the same combination of schedule, media type and placement.

Ad sets that are in the state Reserved, Scheduled or Live cannot clash as their inventory has been locked in.

Learn more about Ad Set States

A clash will not occur if the number of ad sets with state Reserved, Scheduled or Live equals the number of inventory with the same combination of schedule, media type and placement. I.e. Once all inventory is filled and locked in, no further ad sets are eligible to clash.

Resolving Clashes

The outcome of a clash must be determined by a human. For any inventory, there can only be one winner of the clash. The remainder of ad sets will be reallocated or rejected.

If two ad sets are resolved at exactly the same time and it cannot be determined which won the clash, both will remain clashed.

To identify a clash:

Depending on your use case, there are two ways to enter the clash management flow.

Identify a clash from the dashboard actions

1. Navigate to Dashboard > Actions > Clash Management tab.
2. Scroll to identify the first ad set you wish to resolve.
3. Click Resolve Clash to enter the clash management flow.
4. Optionally, click View Related Plan to view the context of the ad set.

Identify a clash on an individual ad set

1. Navigate to your ad set directly via:
   1. Plans & Ad Sets > Ad Sets.
   2. Dashboard > Ad Sets.
2. Identify a clash by:
   1. Filtering by the Status filter and selecting clashed
   2. Scrolling and locating the clashed icon.
   3. Click on the clashed icon to enter the clash management flow.

To resolve a clash:

1. Locate the context of your clash. You will see the other ad sets that are clashing and any ad sets that have already been agreed.
   Note: Agreed ad sets are not clashing but provide useful context when deciding the winner of a clash.
2. To resolve a clash without reallocation:
   1. Click the tick action button to allocate a winner of the clash.
   2. Click Review Changes.
   3. Review the changes you have made by comparing the starting state (top pane) to the new state (bottom pane).
      Note: You will see the ad set/s that lost the clash no longer have a Schedule. These ad sets will return to draft and require reallocation.
   4. Click Resolve Clash.
3. To resolve a clash with reallocation:
   1. Update the Schedule, Media Type and/or Placement of the losing ad sets. You do not need to change the details of the ad set you are allocating as winner of the clash.
   2. Click Review Changes.
   3. Review the changes you have made by comparing the starting state (top pane) to the new state (bottom pane).
   4. Click Resolve Clash.