Hi,

Really thanks for your detailed response. Since I am beginner, I couldn't relate it to how it will be beneficial for my company accounting.

More ever  I started my company account journey. So, Most probably I come to know in the future.  

In Odoo, Journal Entries serve as a fundamental component in the accounting system. They are not just about recording transactions; they help structure and categorize financial data systematically. Here’s a clearer explanation of their purpose and importance:

1. Categorization: While it's true that transactions such as bills or sales are recorded in their respective modules, journals in Odoo categorize these transactions into specific financial activities like Sales, Purchases, Bank transactions, and others. This categorization helps in organizing the accounting ledger more efficiently and aligns with standard accounting practices which categorize entries into different books (like Cash Book, Sales Book, Purchase Book, etc.).
2. Streamlining Financial Reports: Journals make it easier to generate accurate financial reports. By using separate journals for different types of transactions, you can quickly compile data for financial statements such as the Profit and Loss account or Balance Sheet. For example, all entries in the Sales Journal directly affect your revenue accounts, while entries in the Purchase Journal impact your expense accounts.
3. Audit and Compliance: Having distinct journals helps in tracking and auditing financial records. It simplifies the process of reviewing transactions within a particular category without sifting through all entries in the system. This separation is crucial for internal audits and regulatory compliance.
4. Error Management: By segregating transactions into different journals, it becomes easier to locate discrepancies and errors. Each journal acts as a subset of the financial records, which can be independently verified and reconciled without needing to cross-check against all other financial activities.
5. Automation and Integration: In Odoo, journals are integrated with other operational modules (like inventory, sales, purchasing), allowing for automatic transaction recording when actions occur in those modules. For example, confirming a sale order can automatically generate an entry in the Sales Journal.

In essence, while it might seem redundant to have separate journals when transactions are already recorded in their specific operational areas, these journals provide a structured, compliant, and efficient way to manage financial records in accordance with good accounting practices. This structure is especially beneficial as the business scales and transactions become more complex.