If an error occurred or the following message in  English (U.S.) language and you cannot find a solution, than check answer in English. Table below helps to know how correctly this phrase sounds in English. 
                    
                        
                            
                                | id | English (U.S.) | English | 
                        
                        
                                                            | 1 | 'remoteSystem' capability is missing or user has denied access. Make sure you have called RemoteSystem.RequestAccessAsync(). | 'remoteSystem' capability is missing or user has denied access. Make sure you have called RemoteSystem.RequestAccessAsync(). | 
                                                            | 2 | Mandatory fields on the activity object, are not populated. Failed to save the user activity. | Mandatory fields on the activity object, are not populated. Failed to save the user activity. | 
                                                            | 3 | Mandatory fields on the activity object, are not populated. Failed to create the user activity session. | Mandatory fields on the activity object, are not populated. Failed to create the user activity session. | 
                                                            | 4 | This method must be called on an UI thread. | This method must be called on an UI thread. | 
                                                            | 5 | Save the User Activity before creating a session. | Save the User Activity before creating a session. | 
                                                            | 6 | An http/https URI is required. | An http/https URI is required. | 
                                                            | 7 | HostName must be of type DomainName. | HostName must be of type DomainName. |