topic ArcGIS Collector download error - &quot;Unable to construct a WebMapLayer&quot; AND download error - &quot;Unable to create replica. Please check your parameters., Create replica internal error.&quot; in ArcGIS Collector Questions https://community.esri.com/t5/arcgis-collector-questions/arcgis-collector-download-error-quot-unable-to/m-p/574786#M9848 <HTML><HEAD></HEAD><BODY><P>I have published a hosted feature service from a file geodatabase twice using ArcMap 10.5. The first feature service would not download to Collector (version 18.0.1, build 1031) with the error "Unable to construct a WebMapLayer". I checked the geometry of the desktop geodatabase, separated one point with sub-domains into two separate points (in case the sub-domain was causing a problem), and published again as a new feature service. I still cannot download this feature service, but now get the download error "<SPAN>"Unable to create replica. Please check your parameters., Create replica internal error.". The service is visible and editable online.&nbsp;</SPAN></P><P></P><P><SPAN>Help please!!</SPAN></P></BODY></HTML> Tue, 10 Apr 2018 20:51:31 GMT StewardshipStaff 2018-04-10T20:51:31Z ArcGIS Collector download error - "Unable to construct a WebMapLayer" AND download error - "Unable to create replica. Please check your parameters., Create replica internal error." https://community.esri.com/t5/arcgis-collector-questions/arcgis-collector-download-error-quot-unable-to/m-p/574786#M9848 <HTML><HEAD></HEAD><BODY><P>I have published a hosted feature service from a file geodatabase twice using ArcMap 10.5. The first feature service would not download to Collector (version 18.0.1, build 1031) with the error "Unable to construct a WebMapLayer". I checked the geometry of the desktop geodatabase, separated one point with sub-domains into two separate points (in case the sub-domain was causing a problem), and published again as a new feature service. I still cannot download this feature service, but now get the download error "<SPAN>"Unable to create replica. Please check your parameters., Create replica internal error.". The service is visible and editable online.&nbsp;</SPAN></P><P></P><P><SPAN>Help please!!</SPAN></P></BODY></HTML> Tue, 10 Apr 2018 20:51:31 GMT https://community.esri.com/t5/arcgis-collector-questions/arcgis-collector-download-error-quot-unable-to/m-p/574786#M9848 StewardshipStaff 2018-04-10T20:51:31Z Re: ArcGIS Collector download error - "Unable to construct a WebMapLayer" AND download error - "Unable to create replica. Please check your parameters., Create replica internal error." https://community.esri.com/t5/arcgis-collector-questions/arcgis-collector-download-error-quot-unable-to/m-p/574787#M9849 <HTML><HEAD></HEAD><BODY><P>Update - I removed a point feature that had caused problems in the past in other iterations of this geodatabase, and republished.</P><P></P><P>No luck.</P><P></P><P>Any ideas??</P></BODY></HTML> Mon, 16 Apr 2018 17:50:47 GMT https://community.esri.com/t5/arcgis-collector-questions/arcgis-collector-download-error-quot-unable-to/m-p/574787#M9849 StewardshipStaff 2018-04-16T17:50:47Z