You are creating a new company code that you want to assign to the group...

When creating a new company code to assign to a group controlling area, the new company code must share the same Fiscal Year Variant (A) and Operating Chart of Accounts (B) with the other company codes already assigned to the controlling area. This ensures consistency in financial reporting and accounting practices across the organization.References= SAP Financial Accounting (FI) and Controlling (CO) documentation and setup guides.