Message of the error type in required fields contains "or not to be present"

[micronull]

Spec:

components:
  schemas:
    Something:
      type: object
      required: [field]
      properties:
        field:
          title: Some field
          type: string

We send incorrect type value:

err := doc.Components.Schemas["Something"].Value.VisitJSON(map[string]interface{}{"field": 123})

and get an error Error at "/field": Field must be set to string or not be present.

This is critical case for us, since the error message must strictly follow the specification.
We return it to our customers.

[micronull]

Too many changes need to be made in the code to get rid of this piece of the error message.
Maybe just remove it from the text? So that the error message "Field must be set to sometype" is always returned?

What do you think about this @fenollp?

[micronull]

It is now possible to redefine the text of error messages (#679), so the task is not relevant.

However, I think it makes sense to remove the phrase "or not to be present" in the message.