Identify invalid bookmark in word documents

Hi,
We are facing issue while parsing a word document which has problematic bookmarks.These bookmarks are working fine in word document and update fields (bookmark text) started showing error.Before parsing through code we want to identify such invalid bookmarks or validate bookmarks I am unable to find any property in Bookmark class.Could you let me know how I can check valid bookmarks?

@vijay30,

Thanks for your inquiry. Please ZIP and attach your input Word document here for testing. Could you please share how you want to validate bookmarks? We will then provide you more information about your query along with code.