Peculiarities of Periodic Consolidation 
One of the main aims of the consolidation system is to ensure up-to-date and timely consolidated reporting by efficiently and reliably transferring data from the individual financial statements of the subsidiaries. For this reason, the FI-LC system makes it possible for you to prepare consolidated financial statements not only at the end of a fiscal year, but periodically, for example, every month or every quarter.
Defining periodic consolidations
You have to assign a consolidation frequency to every subgroup in the subgroup master record. The consolidation frequency determines the number of consolidated financial statements to be prepared during the year and the relevant period interval per consolidation. You can, for instance, define consolidation frequencies for monthly, semi-annual, trimesterly, quarterly or yearly consolidation. The consolidation frequency you require for a subgroup is assigned within Subgroup Maintenance.
You define the consolidation frequency in the Implementation Guide in step
Master Data ® Subgroups using a one-character, alphanumeric and freely definable key. You define the related applicable period intervals in the detail screen.
The semi-annual consolidation frequency 2 comprises two ranges of periods, that is period 1 through 6 and period 7 through 12.
Defining the consolidation frequency in this way has the following effects
A consolidation frequency is considered to be periodic when at least two period intervals have been assigned to it.

For the purposes of calculating depreciation for periodic consolidation of investments, it is imperative, at present, that you ensure that the period intervals of a consolidation frequency run consecutively (without any gaps). The intervals can include periods 1 through 16. However, when dealing with depreciation or amortization the intervals may not exceed period 12.
Tables dependent on accounting periods
Many of the control tables in the FI-LC System are dependent on the accounting period. You may, therefore, use different valuation methods, in justified cases, for different reporting periods. Although the system is highly flexible, it does require responsible handling on the part of the user. The reason is that the system is generally unable to decide whether a change in valuation methods from one reporting period to the next is permitted in a particular case or whether it is prohibited by the system. Here too, you need to keep a complete record of the changes you make to these control tables for auditing purposes.
When defining consolidation frequencies, therefore, note the following: The Intercompany Elimination and the Reclassification programs do not access the control tables using the period entered as the parameter on the request screen. This period is, in fact, used to read the period table. The period indicator entered for the period interval in the definition of the consolidation frequency determines which control tables are selected. For each period indicator, you have to make an entry in the control table. The number of entries in the control tables can hereby be reduced to a minimum.

For a monthly consolidation, you create 12 period intervals (each one with an interval of one month). The period indicator 1 is allocated to the monthly intervals 1 to 11. The period indicator 12 is allocated to interval 12. If you run the IC eliminations program in, for example, period 11, then the program accesses the control table with period 1. The program ignores any control table entry with period 11.
Currency translation keys for periodic consolidation
You must note the following when translating currencies for periodic consolidation:
If you choose translation key 1, a problem arises when monthly or quarterly figures are evaluated. The system uses the exchange rate table to translate the values in local currency into the group currency. If the exchange rate changes from the previous period, the system enters not only the actual period value in the totals table for the current period. The system also makes an adjustment of the previous period values on the basis of the changed exchange rate, which is also entered in the table. This adjustment posting means that the total value of all accumulated periods is adjusted to the new exchange rate. As a result, monthly or quarterly figures may be distorted.
If you use translation key 5, the system does not make this kind of adjustment posting. In this case, the figures are translated at the monthly rate via the exchange rate table.
Therefore, you need to take care to check which translation keys are to be used for period consolidation.
Subgroups with different consolidation frequencies
The consolidation frequency is an attribute of a subgroup and not of a company. So you may, in principle, include one and the same company in subgroups with different consolidation frequencies. This has the following consequences:
Simplified posting steps
You may want to spend as much time and effort when preparing financial statements during the year as you would for annual financial statements, since the resulting data is only needed for internal purposes. At the same time, they should reflect the situation as accurately as possible, while the time and effort involved and the actual benefit must still be in proportion to each other.
Given that the data from the individual financial statements are fed more or less automatically by various methods into the system, the only really time-consuming activity is actually making the consolidation entries. In most cases, you will probably be unable to avoid temporal posting differences when eliminating IC payables and receivables and when eliminating IC sales. It may be necessary to work with higher tolerance levels during periodic consolidations than for annual financial statements.

For the elimination of IC sales you could choose one-sided elimination to simplify periodic consolidation. For the annual financial statements, however, you should use two-sided reconciliation for expenses and revenues.
You can control this using the period indicator described in the section "Tables dependent on accounting periods".