Hi..
If you define profit center and segments using plant, you can create financial statements for external or internal reporting for plant.
Refer to sap help description realated to segment.
Segment - General Ledger Accounting (FI-GL) (New) - SAP Library
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The accounting principles US GAAP and IFRS require companies to perform segment reporting. You can define segments in your SAP system for this purpose. You find the appropriate IMG activity in Customizing under Enterprise Structure→ Definition→ Financial Accounting→ Define Segment.
You can enter a segment in the master record of a profit center. The characteristic Segment is only released in combination with the characteristic Profit Center. If no segment is specified manually during posting (only possible for transactions in Financial Accounting), the segment is determined from the master record of the profit center. This profit center can also be assigned manually or derived.
If you want to apply different rules to derive the segment during posting, you can define your own rules for this. You find the corresponding settings in Customizing under Financial Accounting (New)→ Financial Accounting Global Settings (New)→ Tools→ Customer Enhancements→ Business Add-Ins (BAdIs)→ Segment Derivation.
The document splittingprocedure is the prerequisite for creating financial statements at any time for the Segment dimension. For this, you need to set up a zero balance setting for the Segment characteristic. You find the document splitting settings in Customizing under General Ledger Accounting (New)→ Business Transactions→ Document Splitting.