Getting No suspense account exists for an employee because of an invalid cost combination

Summary:

I am getting No suspense account exists for an employee when running retroactive costing process, in our project we only have department level costing and element level costing and we do not define suspense account in any case, costing is fully defined for each elements and each department.

So I checked the department level costing and it looks fine where all the segments are defined except account and account is being picked up from the element eligibility level. So i ran retroactive costing process and generated the log where i am trying to identify the element where it errored out.