The review process allows for the independent approval of proposals and later review of creatives following their submission. This process allows advertisers to reserve inventory in advance by submitting proposals, commonly done before submitting the creative.

To review a proposal and/or creative:

In the Line Item Review Center, click Review next to the line item.
At the bottom of the review page, you can choose from the following:
- Approve both: Click to approve both the proposal and the creative, with the option to leave an optional comment for the advertiser. An approved proposal reserves inventory for the advertiser, fulfilling the line item's proposal details.
- Approve proposal: Click to approve the proposal while rejecting the creative, if it has also been submitted. An optional comment can be left for the advertiser. An approved proposal reserves inventory for the advertiser, fulfilling the line item’s proposal details.
- Reject proposal: Click to reject both the proposal and any submitted creative. If you reject a Proposal, you will also reject the Creative. Inventory won't be reserved for rejected proposals. Provide a reason for rejection in the mandatory comment field, visible to the advertiser to make necessary corrections.
  A creative cannot be approved if the proposal is rejected, due to the interdependent relationship between the proposal’s product listing information (for Commerce Display formats) and the creative.
- Reject creative: Click to reject the creative, making the line item ineligible for activation. Provide a reason for rejection in the mandatory comment field, allowing the advertiser to make necessary corrections. If the proposal is approved, inventory remains reserved for the advertiser, meeting the line item’s proposal details.
- Reject both: Click to reject the proposal and the creative. Inventory won’t be reserved for rejected proposals. Provide a reason for rejection in the mandatory comment field, visible to the advertiser to make necessary corrections.

Advertisers will be able to see rejection comments when viewing their line item.