A developer is using a Type into activity to enter details into a web form...

To ensure the selector targets only the First Name text field at runtime, you need to click the additional Property checkbox for ID in the UI Explorer Unselected Items column. This will add the ID attribute to the selector, which is a unique identifier for the text field element. The ID attribute has the value “firstname” for the First Name text field, as shown in the image. This will make the selector more reliable and specific, and avoid targeting the text label or other elements with the same class or tag.

https://docs.uipath.com/de/studio/standalone/2021.10/user-guide/uipath-explorer