Custom AI agent unable to return any data

Summary:

We have created an agent to fetch data from a BIP Report. For this the report is being called by OIC, and the response from the OIC service, we are pulling through REST API.

When the report is having less number of records, the Bot is able to fetch the data & return the output. But when we have too many records, the bot is not giving any response, and just says :

"Sorry, the assistant is unavailable right now. If the issue persists, contact your help desk."

Then let's say we limit the records in the report, then immediately the agent starts working without any changes to the Prompt or the Function.