Business unit field is not editable on page Incentive Compensation-Create Incentive CompensationPlan

Summary:

I am trying to create a Incentive compensation plan, but finding the business unit is not allowing to select any value. Can you please assist how to make it working?

Content (please ensure you mask any confidential information):

My Client Groups > Incentive Compensation > Create Incentive Compensation Plan

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