Order Management and Errors

Lesson Overview

In "MQL5 EA Programming Intro" → "EA Logic Development", this lesson "Order Management and Errors" builds knowledge you can apply immediately.

OrderSend returns ticket; check retcode. Set/modify SL/TP. GetLastError for debugging failures.

Core Concepts

These points align with the video walkthrough—take notes as you watch.

• ▸OrderSend returns ticket; check retcode.
• ▸Set/modify SL/TP.
• ▸GetLastError for debugging failures.

Practical Application

After studying, complete the companion practice lesson to move from understanding to doing.

• ▸Follow along in Jupyter or VS Code
• ▸Log how parameter changes affect backtest results
• ▸Submit a reproducible analysis notebook

FAQ

• ▸Q: How does this lesson fit the course? A: Part of "EA Logic Development"—follow the curriculum order.
• ▸Q: What do I need? A: Demo account and notes; quant lessons need a Python environment.
• ▸Q: How do I know I've mastered it? A: Pass the quiz and explain three key points of Order Management and Errors on your own.