code: function validateIODActions(IOD, IODOpts) {
  		// Validate IOD action schema
  		var actionErr = validateAction(IOD, IODOpts.action, IODOpts.params)
  		if (actionErr) return actionErr
  
  		// Validate IOD action required inputs
  		var inputErr = validateActionInputs(IOD, IODOpts)
  		if (inputErr) return inputErr
  
  		// Validate IOD action parameter pairs
  		var pairErr = validateParamPairs(IOD, IODOpts)
  		if (pairErr) return pairErr
  	}
docs: Validates IOD action schema along with their required inputs.
  
  @param {IOD} IOD - IOD object
  @param {Object} IODOpts - IOD options object
  @returns {Object | null} - Schema errors