Prevent billing doc creation when vbrk & vbrp records are available based on a condition

We are looking to halt billing papers instauration for a transportation aft checking VBRK-NETWR and VBRP-NETWR (so we request XVBRK, XVBRP and XKOMV interior tables to beryllium populated for our requirement), if information is not satisfied halt billing doc instauration successful VF06 / VF04 / VF01.

We tried mates of idiosyncratic exits but thing was adjuvant to halt the billing papers creation.

Could you delight urge a condition/setting to halt the billing papers instauration if information is not met  and which idiosyncratic exit would be  an due spot to grip it ?