As per IFS Notes - Before you finalize the commissions, you must run the commission calculation for all required sites, commission receiver groups, and/or commission receivers. Once the commission calculation is finalized, you can no longer change or recalculate any affected commissions. Normally, you finalize them for a fixed period of time, e.g., you finalize January in February, if the chosen period is "'month." On finalizing, the system will consider the calculation period of the commission receiver as entered in the basic setup. The system will alert you if you finalize the calculations before the end of the calculation period of the commission receiver.

If you have finalized the commission calculation without a previous commission calculation the "neglected" commissions will be transferred to the next commission period. They will not be lost. The same applies if, for some reason, the basis for calculation is changed after a commission has been finalized. An example would be if you create a credit invoice for an order with invoice based commissions that have been finalized. In this case a correction of the commission will be transferred to the next commission period. In these cases the system will generate a correction line to the next commission period.

When an order line is canceled, the connected commissions will be removed automatically. All open commission lines will be canceled. Closed commission lines will be reversed by a correction line, that will be connected to the next open commission period. One correction line per receiver will be created.

Hope this helps, thanks