Mandatory DD elements for relationships?

[alzamabar]

Where in the specs I can find the mandatory elements to define in the DD for relationships?

[alzamabar]

Found answer on the specs. The only mandatory fields for ejb-relation are:

ejb-relationship-role, ejb-relationship-role

And for ejb-relationship-role are:

multiplicity
relationship-role-source
ejb-name

The cmr-field element is not mandatory in case of unidirectional relationship