If your Call Center is located in Canada, be sure the User record has a Locale setting of "English (Canada)"
A Canadian Org setup will have dates formatted as DD/MM/YYYY. When a User in the Call Queue attempts to Complete a Call Disposition, the system is entering the date as formatted for that specific User. If that User's Locale setting is "English (United States)", the date formatting for the User is: MM/DD/YYYY. Because the date formats are different, the system will not accept the date and the Call Disposition will automatically fail.
Changing the User's Locale Setting to match the Organization-Wide Locale Setting will resolve this issue.
The Organization-Wide Locale Setting can be found by navigating to:
Setup > Company Information > Edit
Note the Default Locale of the Organization
Next, check the User's Locale Setting by navigating to:
Setup > Users > choose User > Edit
The Locale Setting of the User needs to match the Organization's Default Locale Setting (regardless of Time Zone):
Fix for this Error in DEV1 package Version: 26.0
When a customer is using prompt suppression in the call queue and they are in the "English (Canada)" Locale the dates are not accepted in the modal.
Both the above issues are fixed

Call Queue and Date formats when User is English (US) Locale


Troubleshooting:
It should be Visible and Readable to All Profiles available in the Organization
