Hello hadi3000
Good day!
This appears to be you not installing RF High power Model Kit before using single product model.
https://www.nxp.com/products/rf/rf-high-power-models/models-for-ads-keysight-advanced-design-system:...
Our models are two part :
RF High power Model Kit
Product Model Design Kit
Both parts are required to simulate device.
If you already installed the High power Model Kit, please check the TroubleShootingADSInstallation Problems and verify that the FSL_TECH_INCLUDE element exists in the top-level circuit.
You can also find the section on common installation errors here.
https://www.nxp.com/docs/en/companyinformation/OVERVIEW_MDL_ADS_DESIGN_KIT.pdf
I hope this information has helped you, please let me know if you need help with anything else.
Have a great day and best of luck.