I learned i need to obtain the insurance via the Small Biz Health Options Program or qualify for an exception. How do I qualify for an exception so I get the tax credit?

There is a 50% tax credit for small biz that pay at least have the cost of health insurance premiums for their employees. My small biz does this but we don’t buy our ACA compliant plan from SHOP. Turbotax says we may still get the tax credit  if we qualify for an exception. Got details on who qualifies?