The apply evidence changes process serves two purposes: one is to activate new and updated evidence, the other is to remove active evidence which has been flagged as pending removal. A user can select to enact this process in three different ways: by applying all outstanding changes, by applying only his or her own changes, or by selecting the specific changes to apply from the complete list of pending changes.
Both the calculate attribution period and the submit for approval process are called as part of applying evidence changes. The purpose of the calculate attribution period process is to calculate and store the period of time during which the newly activated evidence will be used in eligibility and entitlement determination. The purpose of the submit for approval process is to determine whether or not an evidence change requires approval from the case supervisor and to initiate the processing which gets this approval.
At a high level, the process of applying evidence changes can be divided into stages. In the first stage, the evidence controller validates the pending evidence changes. In the second stage, the evidence controller determines whether or not the evidence changes require approval from the case supervisor. In the third stage, the evidence controller activates the in edit evidence and calculates the attribution periods for the newly activated evidence. In the fourth stage, it cancels any active evidence which is pending removal. In the final stage, the eligibility and entitlement engine is called.