              True,
          )
  
      @skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
      @isolate_apps("schema")
      def test_remove_index_together_does_not_remove_meta_indexes(self):
          class AuthorWithIndexedNameAndBirthday(Model):
              name = CharField(max_length=255)
              birthday = DateField()
  
 
</s> remove                 index_together = ["bio", "age"]
 </s> add                 index_together = ["bio", "age"]  # RemovedInDjango51Warning.
    @ignore_warnings(category=RemovedInDjango51Warning)
              True,
          )
  
      @skipUnlessDBFeature("allows_multiple_constraints_on_same_fields")
    @ignore_warnings(category=RemovedInDjango51Warning)
      @isolate_apps("schema")
      def test_remove_index_together_does_not_remove_meta_indexes(self):
          class AuthorWithIndexedNameAndBirthday(Model):
              name = CharField(max_length=255)
              birthday = DateField()
  
keep keep keep add keep keep keep keep keep keep
 Fixed #27236 -- Deprecated Meta.index_together in favor of Meta.indexes.

This also deprecates AlterIndexTogether migration operation. 
tests/schema/tests.py