What are the requirements for URLs?
For the URL fields, supply the fully-qualified Internet adress. The URL must include the http:// or https:// protocol and cannot exceed 1024 characters. For the click-through URL field, supply the fully-qualified Internet adress. The URL must include the http:// or https:// protocol. The click-through URL must point to a valid file type such as an HTML page, an image file, or a PDF file. The URL must also point to a creative with a valid MIME type. The following table lists the valid MIME types with examples of corresponding file types.