Avalara Error / interruption when creating a business event to the sales order screen

I have created a business event to trigger when a sales order is created with a linked source from a CRM sale quote.  It is working however if first gets an error from the Avalara tax. The error will clear and tax will calculate once it’s saved a 2nd time.  I would like to resolve the error however.  I believe this is due to the tax calculating at the entry which is the same time the business event is triggering.  Has anyone else experienced this?   TYI