Ojs\JournalBundle\Entity\SubjectTranslation:
  properties:
    subject:
      - NotBlank: ~

Ojs\JournalBundle\Entity\Subject:
    properties:
        translations:
            - Valid: ~
        tags:
          - NotBlank: ~
Ojs\JournalBundle\Entity\SubjectTranslation:
  properties:
    subject:
      - NotBlank: ~

Ojs\JournalBundle\Entity\Subject:
    properties:
        translations:
            - Valid: ~

Make subject tags not mandatory
Make subject tags not mandatory
