Error in Employment contract "Context Value Contract additional info is not in the list of values."

Summary:

Hi, I have the following problem.

The path is: My client Groups -> Employment Contract -> Search the employee name -> Add

When I click submit the following error appears: Context Value Contract additional info is not in the list of values. 

Could you give me a solution? I need to fix it

 Thanks. 

Annapia

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):