Payment Cash Application

Hi,

I have a batch that was enter on the payment application screen with a error posting date of 12/3017 instead of 12/2017.  The payment is showing on the customer history with a period posting date of  12/3017. I thought I was fixing the problem by reversing the five documents that made up the batch but the payment is still there and I think I actually cause a bigger problem. I wanted to know is their any way to remove the batch that's posted in 3017 and do I need to reverse the document reversals?

Thanks,

Ken