In CRM 2015, if you use CRM mobile and you have a business rule that references a lookup field, if you create a new record in the lookup field, the business rule will not fire. This issue is fixed in CRM 2016
In CRM 2015, if you use CRM mobile and you have a business rule that references a lookup field, if you create a new record in the lookup field, the business rule will not fire. This issue is fixed in CRM 2016