VF06 - skip error document during background job processing

Hi Experts,

Could you please help me with your expertise to two of my requirements.

1. I need to check VERTEX connectivity during sales order and billing document pricing, does standard SAP logs errors / connectivity status? I want to use this flag / status to block sales or billing documents.

2. If VERTEX is down during one of the billing documents during background job processing (VF06), system should stop from creating error billing document and proceed further with other billing documents without error out the entire job.

Thanks in advance for your help.

Regards,

Joshua