•R/3 provides some basic defaults during document processing. R/3 always proposes the current date as the posting date and the entry date during document processing. However, the entry date cannot be changed.

• R/3 adheres to the “Document Principle”: all documents must balance before they can be posted.

• As you process through various accounting transactions, default document types and posting keys are defined per transaction in customizing. A vendor invoice will have the document type KR; the credit entry will be posted using posting key 31. A customer invoice will have the document type DR; the debit entry will be posted using the posting key 01.

• You can also have R/3 propose the value date and the fiscal year in various accounting transactions.

• At the company code level, specify the maximum exchange rate difference between the exchange rate entered in the document header of a transaction and the rate in the exchange rate table If the system finds a difference which exceeds the percentage rate specified, a warning message is given. In this way, incorrect entries can be recognized and corrected in time.