User will get this error message saying "Input must be in the format__.__._____" when running the script.
Transaction 10x, Studio 11x
The user profile in SAP has a different format and expecting the same to be passed.
Changes has to be made to the user profile in SAP.
Log on to SAP. Go to system menu then User profile and then own data. Change the format to suit your excel file. Or see what is stored in your profile and change the excel format to match it.