Actual Posting 
Purpose
With the Special Purpose Ledger actual posting, you are able to transfer data/business transactions to the FI-SL system in one of the following ways:
· From other SAP application components, such as Financial Accounting (FI), Materials Management (MM), Controlling (CO), and Sales and Distribution (SD)
· Directly, using FI-SL’s document entry function (for example, when posting correction documents)
· From external systems (for non-FI-SL data)
You can enter a transaction into the “MM” system as a “material receipt”. This transaction could then update an FI-SL ledger in real-time mode.
The document principle controls the input and storage of documents in the SAP R/3 Systems. A document is the basic unit for recording and tracking business transactions through the SAP R/3 System. One document exists for each business transaction. Each document is assigned a document type. The document type groups together documents that are to be processed in the same way. In the FI-SL System, document types determine:
· Whether a document is stored as plan or actual data.
· Which currency fields appear on the document entry screens.
· Whether or not the document has to balance.
· How the document number is assigned.
Integration
All SAP Systems operate under the philosophy that business transactions should only enter the system once. These transactions are then available to all other SAP Systems real-time.
The FI-SL System collects data at the original entry point and validates it immediately during entry. Update into FI-SL from other SAP applications is real-time; you can also update the FI-SL System at a later time. For external data, an interface framework is provided with your delivered system.
An SAP accounting document is similar to a conventional accounting entry, since it can contain debit and credit amounts. However, the SAP accounting document allows you to enter additional information about the business transaction, such as quantities and statistical values. The information you can enter is only limited by the dimensions contained in your database table.
Features
The following graphic shows the basic processing of transaction data that enters the FI-SL System.
Information is processed by the FI-SL System as follows:
...
1. A business transaction is transmitted real-time or in non-dialog mode (for external data) to the FI-SL Integration Manager.
In real-time processing:
FI-SL's Integration Manager receives and processes all data that enters the FI-SL System. The Integration Manager validates, and substitutes, and then summarizes data according to user-defined conditions.
In non-dialog mode:
Data can be read from (1) an external file and sent to the Integration Manager, or (2) from a source application database (FI) and then be sent to the Integration Manager via a utility program, such as RGUREC10.
2. The Integration Manager processes the transaction data.
Within the FI-SL System, you define ledgers that contain dimensions from an FI-SL database table. Depending on how you define a ledger, the Integration Manager determines:
– Which data is posted to a ledger.
– How data is summarized in a ledger.
The Integration Manager also processes incoming transaction data according to certain user-defined conditions, such as validation, substitution, and ledger selection conditions. The system also checks if a dimension combination is valid, depending on how the dimension(s) is defined in the database table. These conditions determine if transaction data can post to the FI-SL System.
You could define a ledger selection condition in FI-SL that states that transaction data for specific cost centers should not update a ledger.
3. The entered data is posted to an FI-SL table. Transaction data is posted to a summary database and, if specified, a line item database.
If necessary, currency translation occurs before transaction data is posted to the databases.
For more information about summary
databases and line item databases, see FI-SL
Database 
Tables
When you enter a document, the system provides you with online assistance to ensure that you enter valid data. Data that enters the FI-SL System is analyzed and processed by the Integration Manager.
The Integration Manager reviews incoming business transactions and posts them to the relevant ledgers at the desired level of detail. The Integration Manager can also:
· Validate a business transaction and then send error messages or warnings to the user making the data input.
· Substitute certain values before posting data to the FI-SL System.
The document is posted to the system after full validation by the Integration Manager has taken place. The FI-SL System then summarizes the document according to user-defined summarization rules.
During posting, the system translates currency as you have defined it in your system for example, from local/global currencies to group currencies. For data that enters FI-SL, currency translations are made based on the rates defined in table TCURR (“Foreign Exchange Rates”). You can maintain the rates in this table as often as necessary.
When translating currency, the system:
4. Checks the currency type that is defined for the document.
If the currency type is defined for the document, the system posts the currency as entered in the document.
5. If the currency type is not defined for the document, the system checks if the currency is the same as another currency type that is defined for the document. If yes, the system posts the document using the other currency type defined for the document.
If the currency is different from all currency types defined for the document, the system translates the currency using table TCURR.
Currency types are defined in Customizing. For more information about currency types and currencies, see the FI System Administration Guide documentation and the Global Settings Implementation Guide (IMG).
Additional posting information can be found under:
Data Input from Other SAP Systems
Data Input from External Sources
Document Entry in the FI-SL System
Document Types and Number Assignment
