Field help (EECSCH) 

The EU or statistical rules are used to specify the nature of the EU transaction from a tax or statistical point of view. The EU rule is used in the Intrastat.
This information is initialized using the physical flows where it can be modified. This information can also be accessed from some financial flows (sales invoices and credit memos).
The initialization of the nature of the transaction is carried out according to the parameters of the comparison table for the Movement rules and natures, which is used to associate an EU rule and an EEU transaction nature to each type of flow. This setup can be adjusted by rule, country and group of companies.