Validating Custom Fields

Hi All,

I added 3 custom fields in the service order item shopping cart.

I am trying to validate those 3 fields.

I implemented the code in "BBP_DOC_CHECK_BADI" BADI.

The problem is the error is raised as soon as I enter the data and click on

" Add to Shopping Cart " button.

But I want the error to be raised once we enter something in the custom fields and click on Check button.

Appreciate any inputs.

Thanks,

Vinay