https://forums.autodesk.com/t5/revit-architecture-forum/check-structural-box-for-floor-get-error/m-p/8341869#M211121 Expand &gt;&gt; and see what you can do. If nothing, just click OK. Wed, 17 Oct 2018 21:34:46 GMT ToanDN 2018-10-17T21:34:46Z https://forums.autodesk.com/t5/revit-architecture-forum/check-structural-box-for-floor-get-error/m-p/8341861#M211120 <P>I'm working in an MEP model and I was having trouble getting some of my hangers to automatically attach to the Concrete on Metal Deck above. I was told that I had to open the arch model, select the Concrete on Metal Deck floors and check the Structure box in the Properties pallet. I did that &amp; I got this error message</P><P>&nbsp;</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Struct.png" style="width: 478px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/558781i2E7F400FBEAB7C39/image-size/large?v=v2&amp;px=999" role="button" title="Struct.png" alt="Struct.png" /></span></P><P>&nbsp;</P><P>All 23 errors are the same. Since I work on the MEP side, and not the architectural side, I'm not sure what this error means. Is it safe to proceed or will this or will it screw things up?&nbsp;</P> Wed, 17 Oct 2018 21:31:23 GMT https://forums.autodesk.com/t5/revit-architecture-forum/check-structural-box-for-floor-get-error/m-p/8341861#M211120 ben 2018-10-17T21:31:23Z https://forums.autodesk.com/t5/revit-architecture-forum/check-structural-box-for-floor-get-error/m-p/8341869#M211121 Expand &gt;&gt; and see what you can do. If nothing, just click OK. Wed, 17 Oct 2018 21:34:46 GMT https://forums.autodesk.com/t5/revit-architecture-forum/check-structural-box-for-floor-get-error/m-p/8341869#M211121 ToanDN 2018-10-17T21:34:46Z