Direct answer
To open (trade) a forex pair in MT5, you first select the pair’s symbol (for example, EURUSD) in Market Watch, then place an order by choosing buy or sell, setting the order type and volume, and finally sending the order. MT5 treats a forex “pair” as a tradable symbol that you request through its order ticket.
Mechanics: selecting a forex pair and sending the order
- Find the symbol: In Market Watch, locate the forex pair you want to trade. If you do not see it, you typically need to add the symbol (often via the Symbols list in Market Watch).
- Open the order ticket: Right-click the symbol and choose the option to trade (wording varies by MT5 build). This opens the order ticket.
- Choose buy or sell:
- Buy means you are buying the base currency and selling the quote currency.
- Sell means you are selling the base currency and buying the quote currency.
- Set order details:
- Volume: the size of your position.
- Order type: common types include market and pending orders. A market order uses the current available price; a pending order waits for a specified trigger price.
- Price fields: for market orders, the order ticket usually shows the available execution price; for pending orders, you specify the trigger and related levels.
- Send and verify: Before sending, review the ticket to confirm the symbol, side (buy/sell), volume, and order type. After sending, check Trade/Terminal views for the resulting order or position.
Example checks: avoid common setup mistakes
- Wrong symbol: Confirm the symbol shown on the ticket matches the intended currency pair.
- Wrong direction: Double-check whether you selected Buy or Sell before sending.
- Volume mismatch: Ensure the volume value is what you expect for the symbol.
- Order type confusion: Verify whether you placed a market order now or a pending order with a trigger price.
- Trading allowed: If the ticket prevents sending or shows an error, it can indicate the symbol is not tradable in your current conditions (for example, trading is disabled for that symbol).
Limitations and verification
MT5 is a platform interface: it does not guarantee execution at a specific future outcome, and order handling can depend on your broker’s trading server rules and the current market state. Even when you follow the steps above, execution and fills may vary due to liquidity, spread changes, and server-side constraints. The most reliable independent verification is to confirm the exact symbol, order type, and parameters on the order ticket and then check the Terminal for whether the order is accepted, rejected, or filled.
If you want, tell me which MT5 layout you use (the broker’s exact order ticket labels can differ) and whether you place market or pending orders, and I can map the fields more precisely.