We have a large PDF (60+ pages) and try to verify certain content on specific pages. During the recording process some elements are captured with TagName and TextContent and others with TagIndex. In this scenario TagIndex is not reliably, because the document is large and the elements change dynamicaly.

One solution is to update the element's find logic manually on all elements that use TagIndex, but this is very time consuming. 

Another option is to use coded step to find the target element by TextContent and verify it.