# Demo Mode

If a user is not authorized to use CEE Fare Builder, or if authorization fails, the application switches to Demo Mode, which prevents updates to PNR data. A warning message appears, and the **Create Filed Fare Mask** button is disabled, replaced with a message indicating **DEMO MODE**.

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXciNssV6VmY4uuoozQIYRPIaXZwnWq4FRWqBcuhrC431zagWxnGdeNiTfZ7Sgr-WnSH6F0k3RC9B4_ULuSmd8_VUeEzWsq9sd4-S7icIW4y9XaJLDYowzBPSQYYj1_cF4jnVXAG?key=K69gCO3qdKM_QTIzDuLFm2Rn)   ![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXdnkdOO-tcx0g8QEj4j8WGVKKsP04DwHJ3WXGgHTEuw2Y_-CFNIs-cWLjyfCCd6ZOxgD5TKBT-Sddise4zXICRHHTJVBGjJLfYIQemipxLreah_6MscawlQMVbOBL8aAx_fSUIUKw?key=K69gCO3qdKM_QTIzDuLFm2Rn)   

Additionally, a Demo Mode label is added to the version information in the application header:

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXd2ctbY32vBvPjZw_giXD7IJHS9vAOCZKNHrdf4Ji9L1XTKhaXLB52vEe8g8RCK49e3vmMoSwEmTiWKI_o1RosWi813AMqdnLqRCAoGLP0blc-y7FJx2hNebmT-AUqmScTbBto_Qw?key=K69gCO3qdKM_QTIzDuLFm2Rn)