Merge pull request #551 from AdiGanMSFT/docs-editor/office-365-management-activity-1777029827

Update office-365-management-activity-api-schema.md

Author: lindalu-MSFT

office-365-management-api/office-365-management-activity-api-schema.md

@@ -2733,6 +2733,7 @@ Values taken by SettingsChange properties in Details for different operations ar
 |CountOfArtifactsBeingAdded|Edm.Int32|No|Number of artifacts being added.|
 |CountOfArtifactsBeingRemoved|Edm.Int32|No|Number of artifacts being removed.|
 |ServiceType|Edm.String|No|Whether it is a SharePoint, Exchange, or OneDriveForBusiness policy.|
+|BillingPolicyId|Edm.String|No|The ID of the associated Billing Policy.|
 
 ## Granular Browse Task schema