The survey invitation code is a special code present on the purchase receipt of the restaurant. The survey code is essential from the survey's point of view that required to begin the survey. The homepage of the survey website has a field where the survey invitation code entered. It is only after entering the survey invitation code that the survey begins. The Olive Garden survey code has limited validity. It is valid only for five days after that it becomes of no use. Therefore the participant needs to take the survey within five days of their recent visit to the restaurant. The code gets expired if the participant takes more than five days to take the Olive Server Survey. Thus, the participant has to get a new survey invitation code and try to retake the survey.