How to deal with requirement to cost a bonus accrual at business unit level?

Summary:

We need to cost an element based on the employee's business unit.

Content (please ensure you mask any confidential information):

Our accounting department would like us to calculate and cost a per pay period accrual for annual bonuses. We have a solution for the calculation, but have not figured out an easy way to set the cost center to a value based on the employee's business unit. Has anyone else had this requirement and how did you resolve it?

Version (include the version you are using, if applicable):

24D

Code Snippet (add any code snippets that support your topic, if applicable):