Accounting determination simulation during billing

Hello Friends,

We have a business requirement to simulate account receivables before releasing to accounts during billing document save. In standard, we can check account entries only after billing document save. Hence Could you please suggest -

a. Is any standard approach available to simulate an accounting determination during the creation of billing document?

b. I was identified simulation function in VF04 (Collective billing) but not sure how it works and the usage of this function.

Account determination analysis in billing document not really fill the requirement, our business is looking more like simlation process in finance side.

Many thanks in advance for your help.

Thanks

Regards,

Goutham