About the Primary ID Field

The Primary ID Field is a field in the parent business component that includes the following items:

• Contains the row ID value of the primary record for each record of the multi-value group in the child business component.

• Identifies the field in the child business component that designates the record that is the primary.

• Identifies the foreign key field in the parent business component.

• Is identified in the Primary Id Field property of the multi-value link.

For more information, see Defining the Primary ID Field of a Multi-Value Link and Determining Whether You Can Reuse a Predefined Business Component Field.