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When geocoding using a composite address locator that is comprised of composite address locators from StreetMap Premium and custom address locators, the following message displays:
The combined number of address locators participating in the main composite address locator is more than the documented limit. The maximum number of participating address locators in a composite locator is 30, but it is recommended not to use more than 10, otherwise geocoding may be significantly slower. For more information, refer to the following ArcGIS Help document: Creating a composite address locator
However, the error may still occur even if the total number of participating locators is less than 30, and this could be due to a memory issue.
Note: To improve memory performance, install the ArcGIS 10.3 (Desktop, Engine, Server) Geocoding General Maintenance patch or use ArcMap 10.4 or later versions.
To build a composite address locator with multiple composite address locators for memory efficiency, follow the steps below: