The "Invalid Price" error in MT4 occurs when the platform rejects an order due to incorrect pricing. This can happen when placing manual trades, modifying orders, or running Expert Advisors (EAs). Below are the common causes and solutions.
You can view the exact error message in the MetaTrader Journal log. Follow
these steps to find it:
Check Error Messages in MetaTrader
Here are also several reasons for "Invalid Price" error:
- Incorrect Lot Size – Too large or too small for the broker’s requirements.
- Wrong Price Format – Too many decimal places or incorrect Bid/Ask.
- Off-Quotes or Slippage – Fast-moving markets or requotes.
- Pending Order Issues – Stop/Limit orders placed too close to the current price.
- Broker Restrictions – Minimum/maximum trade distance rules.
The solution in this case is to check your EA Settings are accurate and try again.