https://community.esri.com/t5/arcgis-utility-network-questions/migration-toolset-missing-assembly-target-class/m-p/1682801#M6465 <P>The migration toolset is designed to create a simpler model that doesn't include any rules for containment or associations. Therefore, we decided not include the assembly class as a target. The water valve class is a water device, and if you have a complex valve assembly that contains multiple components, you will be representing them as like-for-like objects in the utility network.</P> Fri, 06 Feb 2026 17:18:59 GMT RobertKrisher 2026-02-06T17:18:59Z https://community.esri.com/t5/arcgis-utility-network-questions/migration-toolset-missing-assembly-target-class/m-p/1682749#M6464 <P>Hi&nbsp;<a href="https://community.esri.com/t5/user/viewprofilepage/user-id/138089">@RobertKrisher</a>&nbsp;</P><P>When using the Migrate to Utility Network geoprocessing tool, the Target Class picklist does not list Assembly as an available class in the mapping section.&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Lorne_Dmitruk_0-1770393797572.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/148054i4C8237B0B96DDEC9/image-size/medium?v=v2&amp;px=400" role="button" title="Lorne_Dmitruk_0-1770393797572.png" alt="Lorne_Dmitruk_0-1770393797572.png" /></span></P><P>&nbsp;</P><P>Yet the output migration database does include the Assembly feature class as shown below.</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Lorne_Dmitruk_1-1770394017199.png" style="width: 400px;"><img src="https://community.esri.com/t5/image/serverpage/image-id/148055i7474A4C1D98950B1/image-size/medium?v=v2&amp;px=400" role="button" title="Lorne_Dmitruk_1-1770394017199.png" alt="Lorne_Dmitruk_1-1770394017199.png" /></span></P><P>&nbsp;</P><P>Is this a bug or intentional?&nbsp;</P> Fri, 06 Feb 2026 16:11:04 GMT https://community.esri.com/t5/arcgis-utility-network-questions/migration-toolset-missing-assembly-target-class/m-p/1682749#M6464 Lorne_Dmitruk 2026-02-06T16:11:04Z https://community.esri.com/t5/arcgis-utility-network-questions/migration-toolset-missing-assembly-target-class/m-p/1682801#M6465 <P>The migration toolset is designed to create a simpler model that doesn't include any rules for containment or associations. Therefore, we decided not include the assembly class as a target. The water valve class is a water device, and if you have a complex valve assembly that contains multiple components, you will be representing them as like-for-like objects in the utility network.</P> Fri, 06 Feb 2026 17:18:59 GMT https://community.esri.com/t5/arcgis-utility-network-questions/migration-toolset-missing-assembly-target-class/m-p/1682801#M6465 RobertKrisher 2026-02-06T17:18:59Z