How to extract data with the backup XPath?
It is common that a field may appear in different places on different pages. In this case, one fixed XPath cannot always locate the right field. Therefore, we need a backup XPath.
When you click to customize XPath, you can find the backup position bar, where you can input the second XPath.
Please note that relative XPath and backup XPath cannot be applied at the same time, meaning if relative XPath is used to locate the field, then the backup XPath won't work.
Artículo en español: ¿Cómo extraer datos con la backup XPath?