Непонятный DeleteAction

[Maxim Gorbunov]

Мда...
Вообще-то, лучше смотреть раздел Axapta Developer's Guide, который называется Validation and Integrity (Creating a Database/Relationships/Validation and Integrity)

Цитата:

How MorphX retrieves information for validation and lookup
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When performing a field validation, MorphX does the following:

• MorphX checks if the field is part of a relation on the table. If it is, this relation is used for the validation. If there is more than one relation using the field on the table, MorphX chooses the relation that contains the highest number of fields.
  
  
  
• MorphX checks if a relation has been defined on the Extended Data Type used in the field, or if there exists a relationship on the Extended Data Type from which it is inherited.