Master Data 
Definition
Master data is the data used to portray the units in General Ledger Accounting that remain unchanged over long periods.
Structure
The master data in General Ledger Accounting comprises the following objects:
The G/L account master records control the posting of accounting transactions to G/L accounts and the processing of the posting data.
Profit center master data serves as the hierarchical term according to which you can post and subsequently analyze data relevant to Profit Center Accounting.
Profit Center
Accounting is integrated in new General Ledger Accounting.
· Segment
Division of a company for which you can create financial statements for external reporting.
Integration
Updating
You can make identical settings for updating segments and profit centers as well as the relevant partner information in the ledgers of the new General Ledger. In this way, you can also use the same reporting for both organizational units. For example, you can create a profit and loss statement for each segment and profit center.
Hierarchies
You can create hierarchies for profit centers. In this way, you can display the posted documents of several profit centers as a joint result for a higher area of responsibility. You can use sets to define the hierarchies for the segments.
Functions
In general, you have access to functions such as document splitting, assessment, distribution, and planning for both organizational units, encompassing the same functionality. For closing activities such as foreign currency valuation, sorted lists, or balance carryforward, the segment and profit center information remains intact in the same way.