You want to approve or reject an incoming deployment.

The question is about approving or rejecting an incoming deployment. The following roles allow you to do so:

Specified Reviewer Group: This is a group that can be specified by the application administrator when creating a deployment package. Members of this group can approve or reject the deployment package in the target environment.

System Administrators: This is a group that has full access and control over all applications and system settings in Appian. Members of this group can approve or reject any deployment package in any environment.

Application Administrators Group: This is a group that has full access and control over a specific application in Appian. Members of this group can approve or reject any deployment package for their application in any environment.

The following roles do not allow you to approve or reject an incoming deployment:

Application Viewers: This is a group that has read-only access to a specific application in Appian. Members of this group cannot approve or reject any deployment package for their application in any environment.

Application Editors: This is a group that has edit access to a specific application in Appian. Members of this group can create and export deployment packages for their application in any environment, but they cannot approve or reject them.

References:

Deploying Applications

Application Roles