Starting with the release of Strategy ONE (March 2024), dossiers are also known as dashboards.
When adding a Dossier to Strategy Library, some users may encounter an 'Application Error' as shown below:

Sample Code/Error: Application Error An error occurred within the application. Please contact Administrator.
One possible root cause for this behavior has been identified to be the existence of a duplicate profile for the user encountering this error. If that is the case, the duplicate profile can be seen when reviewing this error in the DSSErrors.log.
If it is verified through the DSSErrors.log file that there is a duplicate user profile, this issue can be resolved by deleting the duplicate user profile that is not in use. After doing so, the affected user(s) will be able to add dossiers into their Library.