By default the environment is not selected for the Web Modeler. Thus, when you try to publish, you will get a warning message. For more information, see Publishing Your App From the Web Modeler.
2 Selecting Web Modeler Deployment Environment
To select the environment for the Web Modeler, do the following:
Open Deploy > Environments in the left menu bar in the Developer Portal.
In the Deploy tab > Environments section, select the environment that you want to select for the Web Modeler deployment by clicking Details.
In the General tab, select Web Modeler Target and click Change.
In the Select Web Modeler Target dialog window, click the drop-down menu and select the environment.
You have selected the environment for the Web Modeler.