To check whether a survey is valid, choose Tools / Validate Survey from the Survey Designer menu. Validation also occurs automatically every time you Save your survey. If the Survey Validator finds any problems, it will explain them. You may save a survey that has validation errors, but you cannot check it in until the errors are resolved.
A survey may become invalid when any of the following occur:
- Someone edits the survey XML by hand and leaves the XML malformed. The survey is invalid because the XML is invalid.
- Question B includes text piped in from the response to question A, and then question B is moved from its original location, so that it now appears before question A. The survey is invalid because question B relies on information that it cannot possibly obtain.
- Question B includes a show-if condition that evaluates the response to question A, and then question B is moved from its original location, so that it now appears before question A. The survey is invalid because question B relies on information that it cannot possibly obtain.