from django.db import models

from .base import BaseModel


class Tag(BaseModel):
    _id = models.CharField(max_length=1024)
    lower = models.CharField(max_length=1024)
    system = models.BooleanField(default=False)

@@ -213,8 +213,69 @@
 =False)%0A
+%0A    class Meta:%0A        unique_together = ('_id', 'system')%0A

Add unique together on _id and system