Error Message
                    
                    
                
                    Spatial reference must be a projected coordinate system. 
Spatial Reference error for Load a Topology to a Parcel Fabric tool.
![[O-Image]](https://webapps-cdn.esri.com/CDN/support-site/technical-articles-images/000011898/00N39000003LL24-0EM39000000wdRd.png)
                
                
                
                
                
                     
                        Cause
                    
                    The Load a Topology to a Parcel Fabric tool only allows the user to load data existing in a Projected Coordinate System (PCS). However, the input topology data uses a Geographic Coordinate System (GCS), such as NAD83.
This is a known limit. The Parcel Fabric can be in a GCS, but the data participating in the topology must be in a PCS using the same GCS. For example: 
Topology data:
NAD_1983_StatePlane_North_Carolina_FIPS_3200_Feet 
NC_StatePlane
![[O-Image]](https://webapps-cdn.esri.com/CDN/support-site/technical-articles-images/000011898/00N39000003LL23-0EM39000000wdRe.png)
Parcel Fabric:
GCS_North_American_1983
 
                
                
                
                
                    
                     
                        Solution or Workaround
                    
                    
                    The data participating in the topology must be projected. Instructions provided below describe the process.
- Select a PCS that matches the Parcel Fabric's GCS. If the Parcel Fabric is stored with a PCS, make sure the selection is exactly the same.
 - Create a new Feature Dataset using the selected PCS. Right-click the geodatabase, and navigate to New > Feature Dataset. Give the dataset a unique name, and use the selected PCS.
 - Delete the topology from the original Feature Dataset. This must be done in order to run the Project tool. Make a copy of the user's data if the topology is still needed for other work.
 - Use the Project tool to transform the original topology data into the PCS. Set the output to the new Feature Dataset, and give the output Feature Class a unique name. Apply any transformations needed between the coordinate systems.
 - Rebuild the topology in the new Feature Dataset using the same rules.
 - Validate the topology and fix any errors.
 - Run the Load a Topology to a Parcel Fabric tool. This allows the user to have the correct format to run this tool.