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Problems and solutions

REFERENZ APPLICATION DEVELOPER STAND: JUL 2026 GILT FUER NUCLOS 4.2026.X

Common pitfalls around rules and business objects – with causes and remedies.

Rule is not executed

• Rule not set to active in the editor.
• Rule contains compile errors and cannot be built as a class.
• Rule built but not assigned to a business object.
• Rule assigned to the wrong BO: a rule on the BO order item does not run when editing an order, even if items appear as a subform.
• No status specified in the assignment – records with a special status (e.g. „cancelled“) are skipped. Also applies to actions.

Rule does not compile

• The class structure does not match the Java syntax.
• The import of the business object class is missing.
• Business objects have not yet been generated – they are created when the BO is processed according to its metadata.

BO cannot be read from the context

• Only the BO the rule is assigned to is in the context. If the rule is attached to the order, getBusinessObject(Customer.class) cannot work.

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