topic Re: Sharing a Custom Model - Error 000816 the tool is not valid in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060074#M41183 <P>Hi Robert,&nbsp;</P><P>No it shouldn't. The model is just a simple string of arcpy functions. I'll post the graphic here.&nbsp;</P> Thu, 20 May 2021 18:08:16 GMT ChrisGAEG 2021-05-20T18:08:16Z Sharing a Custom Model - Error 000816 the tool is not valid https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060011#M41176 <P>Hi there.&nbsp;</P><P>I have a model I built that functions perfectly fine on all of my .aprx's. However when I send the .tbx to a coworker and he imports the toolbox into a project, he gets 'Error 000816 the tool is not valid'. He is on an earlier version of ArcPro than me. My question is what could be the source of this issue? Is the difference in ArcPro versions preventing the use of the tool for him?&nbsp;</P> Thu, 20 May 2021 16:19:49 GMT https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060011#M41176 ChrisGAEG 2021-05-20T16:19:49Z Re: Sharing a Custom Model - Error 000816 the tool is not valid https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060053#M41180 <P>Chris - I found a technical support article about <A href="https://support.esri.com/en/technical-article/000023081" target="_self">Error Code 000816</A> - does this apply to your custom tool?</P> Thu, 20 May 2021 17:12:49 GMT https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060053#M41180 Robert_LeClair 2021-05-20T17:12:49Z Re: Sharing a Custom Model - Error 000816 the tool is not valid https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060074#M41183 <P>Hi Robert,&nbsp;</P><P>No it shouldn't. The model is just a simple string of arcpy functions. I'll post the graphic here.&nbsp;</P> Thu, 20 May 2021 18:08:16 GMT https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060074#M41183 ChrisGAEG 2021-05-20T18:08:16Z Re: Sharing a Custom Model - Error 000816 the tool is not valid https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060926#M41287 <P>Update - I ended up testing the tool with a different co-worker with the same version of ArcPro as me (2.6.3) and the tool worked. Looks the the version discrepancy was the source of the issue.&nbsp;</P> Mon, 24 May 2021 13:05:43 GMT https://community.esri.com/t5/arcgis-pro-questions/sharing-a-custom-model-error-000816-the-tool-is/m-p/1060926#M41287 ChrisGAEG 2021-05-24T13:05:43Z