json_schema: {
      "$schema": "http://json-schema.org/draft-07/schema#",
      "description": "schema for type text",
      "type": "object",
      "properties": {
          "Z1K1": {
              "enum": [
                  "Z11"
              ]
          },
          "Z1K2": {
              "type": "string",
              "pattern": "^[a-z_A-Z0-9]+$"
          },
          "Z1K3": {},
          "Z1K4": {},
          "Z1K5": {},
          "Z11K1": {
              "type": "object",
              "properties": {
                  "Z1K1": {
                      "enum": [
                          "Z9"
                      ]
                  },
                  "Z9K1": {
                      "enum": [
                          "Z251",
                          "Z252",
                          "Z253",
                          "Z254",
                          "Z255",
                          "Z256",
                          "Z257"
                      ]
                  }
              }
          },
          "Z11K2": {
              "type": "string"
          }
      },
      "required": [
          "Z1K1",
          "Z11K1",
          "Z11K2"
      ],
      "additionalProperties": false
  }