Revit Areas Rooms and Spaces - Request to Synchronize with Central model
![](../../../__attachments/2430413304/image-20230228-152946.png?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
During synchronization process, the Add-On Synchronize function may request to synchronize with the central model:
Example 1: User 2 has synchronized with central model before User 1 try to synchronize with dRofus:
User 2 made a Room bigger by moving a wall in the Local model and "Synchronize with Central":
![](../../../__attachments/2430413304/01.jpg?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
User 1 is attempting to synchronize the same room with dRofus and receive a request via the Add-On to "Reload Latest". See picture below:
![](../../../__attachments/2430413304/02.jpg?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
User 1 selects "OK" and the User 1 Local model will:
1. Updated with the latest changes from the Central model
2. Synchronization with dRofus
![](../../../__attachments/2430413304/03.jpg?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
Tick the checkbox “Upload changes to central model” to update the central model aften synchronizing with dRofus, with the latest changes that have occurred within the Local model:
![](../../../__attachments/2430413304/04.jpg?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
Example 2: User 2 has not synchronized with central model before User 1 try to synchronize with dRofus:
User 2 has done some changes in the local model without "Synchronize with Central".
When User 1 then attempts to Synchronize the same Room(s) within his / her instance of the Local model, will User 1 get the following warning message:
![](../../../__attachments/2430413304/image2018-8-21_17-43-10.png?inst-v=7c8c13cc-21d5-4698-8b72-82dd1d3a16cc)
User 1 will need to:
1. Cancel the operation
2. "Place Request" to User 2 to "Synchronize the element(s) to Central" and "Relinquish"
3. "Synchronize with Central" or "Reload Latest"
3. Continue Synchronization process with dRofus .