Validation for Baseline Date

Hi Experts,

I want to create a validation in FI for baseline date. The validation is something like this,

During Invoice posting through MIRO and FB60 and also during invoice parking through MIR7 and FV60, the baseline date entered should not be smaller than the posting date. It should be either same as the posting date or should be greater than the posting date. For e.g. if posting date in the invoice is 02.01.2016, then the baseline date should be either 02.01.2016 or anything greater than 02.01.2016 like 03.01.2016 but it should not be 01.01.2016.

I have already written a validation for the above, but it is not working properly. It is throwing a error message even if the above check is met i.e. if baseline date is same or greater than the posting date it should not throw error, but it is giving the error.

PFA screenshot of my validation for reference. So, I would like to know whether if, I am going wrong somewhere?

Regards,

Akshay Zirmirkar