code: def root_manifest_id(self, root_manifest_id):
          
          if root_manifest_id is not None and len(root_manifest_id) > 32:
              raise ValueError("Invalid value for `root_manifest_id`, length must be less than or equal to `32`")
  
          self._root_manifest_id = root_manifest_id
docs: Sets the root_manifest_id of this UpdateCampaignPutRequest.
  
          :param root_manifest_id: The root_manifest_id of this UpdateCampaignPutRequest.
          :type: str