Need some help in creating a rule in time off, so that an employee cannot be able to book multiple time types(CL and PL) on consecutive days
Use Has Absence in Period() function in your take rule and attach it to the required time types.
Employee Central Time Off: Rules and Concepts https://help.sap.com/viewer/7a713606cfb74a168ee0f2a050d540f8/1708/en-US
You can download pdf version using the above URL and go to page 120 of Q3 2017 handbook.
Then use this "has absence in period()" function to check, whether the previous day had an absence of time type.
Has Absence in Period() function Employee Central consecutive days leave , KBA , LOD-SF-EC-TIM , Time-Off , How To