Description
Multipart geometry is not supported in the reference data when building a locator.
Solution
Use the following steps to correct the reference data and build the locator successfully:
-  Check whether the reference data has multipart features.-  Run either the Add Geometry Attributes or Calculate Geometry Attributes tool to add the number of parts to the reference data.  A feature with more than one part is considered a multipart feature. Note:The tools add a new field named PART_COUNT to the input. 
 
-  Run either the Add Geometry Attributes or Calculate Geometry Attributes tool to add the number of parts to the reference data.  A feature with more than one part is considered a multipart feature. 
- Use the Multipart To Singlepart tool to convert the features in the reference data to single-part features.
- Create the locator using the new reference data.