VA01/VA02 Exit MV45AFZZ Additional data B - Error check

Hello!

I added 2 custom fields at Additional Data B (Dynpro SAPMV45A/8309). They will be updated through VA01 and VA02 t-codes, under some conditiones. This works fine.

I put a check at MV45AFZZ User-Exit with the fields I told you before. When I execute VA02 for example, the validation works fine: the fields are ready for input and the error message is shown (message type E) when it has to. But when y press ENTER accepting the error message, both fields keep unable for input and I need them to be ready for input again because the PO won't be save until I enter some data on it.

The exit code is at USEREXIT_SAVE_DOCUMENT_PREPARE form. I also tried at USEREXIT_SAVE_DOCUMENT form.

Any idea if I have done something wrong?

Thanks n advance and kind regards!