Relationship Role

Use

When more than one relationship exists between two entity types, each separate relationship must be identified through the assignment of a unique relationship role number when it is created.

This relationship role number is a single-digit number.

You should therefore assign the number 1 to the first relationship that you create between two entity types. Assign the second relationship between these two entity types the number 2, and so on.

Press F4 on the field Relationship Role to see the existing role numbers.