General Ledger Accounting is essentially functions as a complete record for all financial business transactions. G/L master data pertains to information on G/L accounts which remain unchanged over an extended period of time. Master data controls how data are entered and processed. Whereas, transaction are linked and managed using master data.multiple company codes can use one chart of accounts. Before a company code can use the g/l account the Company Code Segment has to be created. The company code segment information is specific to each company code. Any changes on any of the information on this segment will not affect the g/l account information on other company codes who are using the same chart of accounts. Information on this segment is unique for each company code.