# IB Charts Not Displayed Correctly or Contain Incorrect Data

**What Happened?**

AgenaTrader displays a **warning popup** indicating:

* **Charts are partially incorrect or contain faulty data.**
* **Historical data is missing, and charts are not updating (ticking).**

**What Does This Mean?**

✅ **IB API Limitations on Historical Data Requests**

* The **maximum number of simultaneous historical data requests** via the **IB API is 50**.
* You should ensure that you have **fewer simultaneous requests** to avoid issues.

✅ **Pacing Violations for Small Bars (≤ 30 Seconds)**

* A **pacing violation** occurs if you exceed one of the following limits:
  * **Identical historical data request within 15 seconds.**
  * **Six or more historical data requests for the same contract, exchange, and tick type within two seconds.**
  * **More than 60 requests within 10 minutes.**

⚠ **Warning:** If too many historical data requests are made, **you may be disconnected from the IB API**.\
➡ **For more details on IB pacing violations for small bars, refer to this IB article.**

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#### **Important Notes**

📌 **1 instrument across 3 time frames = 3 historical requests**\
📌 **1 Analyzer Escort column = 1 historical request**\
📌 **Watchlists, backtest lists, indicators, and alerts also require historical data.**

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#### **Possible Solutions**

✅ **Reduce the number of instruments and historical requests sent to the IB server.**

* Monitor the **green connection bar in the lower left** corner of AgenaTrader.

✅ **Wait 10 minutes before requesting additional historical data.**

* Be cautious: **Reloading data may cause another historical overflow.**

✅ **Consider an external data feed (often paid services).**

* **Check the data feed overview here.**

📌 **This also applies to CapTrader, Banx, Lynx, and other brokers using the TWS API connection.**