Field help (SOITAM) 

This field can only be accessed when the "SDD management" box is not selected.
When this box is selected, the "Statement" field becomes inactive. Conversely, the "Statement" field becomes active when the box is unselected.
The Statement field is used to define how the open item statements are generated. If this field is empty, the payments using this method never appear on a statement. If this field is not empty, the open items are grouped by this statement code (in other words, the open items with payment methods using the same statement code are grouped together if the other generation parameters permit it). It is also possible, at the time of the statement generation, to only select a single statement code, which makes it possible to only process the payment methods concerned.