SAP Message 53077 - Group &1 not permitted for entire period

Diagnosis
The validity period of the group does not cover the entire period fromV2 to v3. group v1 is created but time tickets cannot be enteredfor this group during the entire period.

System Response
If you enter a time ticket for the group outside of the validityperiod, the system issues an error message.

Procedure
Check your entry and correct the validity period of the group.