External Daybooks
External daybooks are designed as an interface to external systems, such as payroll systems.
Example: An organization outsources the calculation of its employee salaries and the breakdown between gross salary, taxes, social security, net salary, and fringe benefits to an external company. This external company returns the results for each employee, and, in addition, the results grouped by GL account, sub-account, and cost center. If the external company sends the resulting postings in electronic format (in addition to paper documents), an external daybook must be defined.
External daybook transactions have a daybook type of Journal Entries. For external daybooks, sequence numbers are generated by the external transaction. However, Record Number Maintain (36.16.21) still generates a number series, which is unused. The system also validates duplicates when numbers are passed from an external application. Record Number Maintain is used if a number is not passed from the external system.