Incompatibility with Specific Word : "Ideation"

We are using OpenAI api for our application. It’s not giving response (which is a summary of particular text) when text includes “Ideation” word, if we remove Ideation word or makes it lower case (ideation) its giving us response. We are unable to find exact cause of this issue. Can you please help us for the same?
We are using TextDavinci003 and Gpt3.5-Turbo models for generating response.