Valid from & Valid to date should automatically be suggested by system in VA41.
Valid From date should be current date & valid to date should be the last day of the current month.
The contract profile is maintained in VOV8.
Rules have been defined for contract profile as below:
Contract Start Rule:
Rule: 01 (Today's Date)
Baseline: 01 (Today's date)
Contract end Rule:
Rule: 31 (Last of Current Month)
Baseline date: 01 (Today's date)
Last of month: 'B' (Last of the month)
Even after the above configuration the system not suggesting the dates.