The user is not able to create an anchor for text that already has an anchor associated with it.
Hide Annotations is not selected in the mini-browser window when selecting the anchor.
The solution is to do the following:
- Click Select or create a new anchor in this document from the Select Anchor dialog.
- Open the Filters menu.
- Select Hide Annotations so that the existing anchors are temporarily hidden.
Vault Annotation Documentation: Using Link Annotations & Document Links