Error Handling in ME_REQ_POSTED BADI

Hello Gurus,

I have to display an error message in ME51N and ME52N.

I am using the BADI ME_REQ_POSTED to do that.

My problem is that my error is type E .

After this error is correctly displayed I am unable to change any field values as all the fields are grayed out. How do I change any values after this error message.

I am using type E error because I do not want user to save the transaction with error values. But I want to allow user to make changes after the error message is displayed.

Thanks