If you get this error while creating an Anchor, you are likely using invalid Characteristics of naming an Anchor. Please change the Anchor Name to a Valid name using the following Charateristics and reclick Insert.

Characteristics of a valid Anchor name:
1. One word
2. Contains only letters
3. Does not contain the following
  • Special characters, such as @, #, or &
  • Numbers
  • Spaces
Here are some examples of valid Anchor names:
  • AnchorOne
  • quicklink
  • jump

Here are some example of invalid Anchor names:
  • Anchor 1
  • Anchor@
  • quick link