Get a Summary Report of the number of changes in Workday for a time period. Associated Blog Post can be found here https://blog.darrenjrobinson.com/querying-for-updates-changes-in-workday-hr-using-powershell/

Get-Summary-Workday-Changes.ps1

# how many changed objects
$changes = [xml]@'
<bsvc:Get_Workers_Request xmlns:bsvc="urn:com.workday/bsvc">
    <bsvc:Request_Criteria>
    <bsvc:Exclude_Inactive_Workers>true</bsvc:Exclude_Inactive_Workers>
    <bsvc:Transaction_Log_Criteria_Data>
    <bsvc:Transaction_Date_Range_Data>
    <bsvc:Updated_From></bsvc:Updated_From>
    <bsvc:Updated_Through></bsvc:Updated_Through>
    </bsvc:Transaction_Date_Range_Data>
    </bsvc:Transaction_Log_Criteria_Data>
    </bsvc:Request_Criteria>
    <bsvc:Response_Filter>
    <bsvc:Page>1</bsvc:Page>
    </bsvc:Response_Filter>
    <bsvc:Response_Group>
    <bsvc:Include_Reference>true</bsvc:Include_Reference>
    <bsvc:Include_Personal_Information>false</bsvc:Include_Personal_Information>
    <bsvc:Include_Employment_Information>false</bsvc:Include_Employment_Information>
    <bsvc:Include_Compensation>false</bsvc:Include_Compensation>
    <bsvc:Include_Organizations>false</bsvc:Include_Organizations>
    <bsvc:Include_Roles>false</bsvc:Include_Roles>
    <bsvc:Include_Worker_Documents>false</bsvc:Include_Worker_Documents>
    </bsvc:Response_Group>
</bsvc:Get_Workers_Request>
'@

# minus 1 minute due to time skew between host running this and Workday
$timenow = (get-date).AddSeconds(-60)
$now = $timenow.ToString('o')

# Update Query Criteria - Get changes in the last 28 Days
$changes.Get_Workers_Request.Request_Criteria.Transaction_Log_Criteria_Data.Transaction_Date_Range_Data.Updated_Through = $now 
$changes.Get_Workers_Request.Request_Criteria.Transaction_Log_Criteria_Data.Transaction_Date_Range_Data.Updated_From = $timenow.AddDays(-28).ToString('o')

# diaglog
write-host -ForegroundColor Green "Changes from: $($changes.Get_Workers_Request.Request_Criteria.Transaction_Log_Criteria_Data.Transaction_Date_Range_Data.Updated_From) TO: $($changes.Get_Workers_Request.Request_Criteria.Transaction_Log_Criteria_Data.Transaction_Date_Range_Data.Updated_Through)"
$response = Invoke-WorkdayRequest -Request $changes -Uri (Get-WorkdayEndpoint Human_Resources)

# output 
write-output $response.Xml.Get_Workers_Response.Response_Results