https://community.esri.com/t5/arcgis-api-for-python-questions/authentication-for-addtodefinition/m-p/1301930#M8813 <P>I'm attempting to add a relationship between two items in a hosted feature layer via the addToDefinition command in a script. I have the correct JSON, and I can apply it myself via the Rest directory of the feature layer. When I try and run it from ArcGIS Pro, passing my pro credentials to the script:<BR /><BR />gis = GIS('pro')<BR /><BR />and using the:&nbsp;</P><P>token = gis._con.token<BR /><BR />command it doesn't work. If I hardcode my username and password into the script instead:<BR /><BR />gis = GIS("<A href="https://www.arcgis.com" target="_blank">https://www.arcgis.com</A>", username, password) it does work...every time!</P><P>What is the difference between the two methods? It's the same account, so surely the token it generates to make the change will be identical. I would rather not have to hardcode a username and password in and have it just inherit Pro's connection properties. I also tried using the:&nbsp;<BR /><BR /><SPAN>arcpy.GetSigninToken() command, but again it doesn't work when I pass this as the token<BR /><BR />Any help is much appreciated</SPAN></P> Thu, 22 Jun 2023 12:06:26 GMT RichardHoweRSKECO 2023-06-22T12:06:26Z https://community.esri.com/t5/arcgis-api-for-python-questions/authentication-for-addtodefinition/m-p/1301930#M8813 <P>I'm attempting to add a relationship between two items in a hosted feature layer via the addToDefinition command in a script. I have the correct JSON, and I can apply it myself via the Rest directory of the feature layer. When I try and run it from ArcGIS Pro, passing my pro credentials to the script:<BR /><BR />gis = GIS('pro')<BR /><BR />and using the:&nbsp;</P><P>token = gis._con.token<BR /><BR />command it doesn't work. If I hardcode my username and password into the script instead:<BR /><BR />gis = GIS("<A href="https://www.arcgis.com" target="_blank">https://www.arcgis.com</A>", username, password) it does work...every time!</P><P>What is the difference between the two methods? It's the same account, so surely the token it generates to make the change will be identical. I would rather not have to hardcode a username and password in and have it just inherit Pro's connection properties. I also tried using the:&nbsp;<BR /><BR /><SPAN>arcpy.GetSigninToken() command, but again it doesn't work when I pass this as the token<BR /><BR />Any help is much appreciated</SPAN></P> Thu, 22 Jun 2023 12:06:26 GMT https://community.esri.com/t5/arcgis-api-for-python-questions/authentication-for-addtodefinition/m-p/1301930#M8813 RichardHoweRSKECO 2023-06-22T12:06:26Z