Adding the SysML profile to a model (SysML)
To add the SysML Profile to a model you require Database Write access permissions to the Model's Database.
Important:
• If the UML Profile has been added to the Model, you must update the UML Profile so that there are no Stereotype name clashes with the SysML Profile.
• Do not make changes to the SysML profile. Any changes you make will be lost when the profile is updated.
Note that you can create Tag Definitions outside of the SysML profile, and link those Tag Definitions to Stereotypes in the SysML profile. When the SysML profile is updated, the links will not be broken. For more information, click here 
• Do not create copies of the SysML profile within a model, or create copies of the SysML profile through XMI Import/Export. The copies of the SysML profile will not work correctly and you will not be able to update the copies through the Update All Profiles command.
To add the SysML Profile package to a model:
1. Open the Model to which you want apply the SysML Profile package.
2. On the Manage tab, click Add Profile.
3. To add only the requirements part of the SysML Profile to the model, select the check box associated with the SysML Profile (Requirements Only) entry.
To add the full SysML Profile to the model, select the check box associated with the SysML Profile (Full Profile) entry.
If the SysML entry is not present, repeat the Modeler installation ensuring that you select the SysML Profile (in Modeler Add-ins) to install.
4. Click OK.
Modeler adds the SysML Profile and UML Profile to the model.
To update the SysML Profile package (and other PTC profile packages) in the model:
1. Right-click the SysML Profile package, and select > .
2. From the dialog, select the check boxes to ensure that you have a version of the model prior to profile updates and any migration of data, and a version of the model after the profile updates and any migration of data are complete.
3. Click OK.
Modeler updates all the PTC Profiles in the model.
For information about whether the model requires migration after updating the profile, click here