MT4 error 134: Not enough money

What MQL4 says

134 ERR_NOT_ENOUGH_MONEY

Not enough money

From MQL4's table of error codes, read 24 October 2026. An Expert Advisor reads it with GetLastError() after a call fails; the Experts and Journal tabs print what the EA logs.

What causes it

Free margin is too small for the order. MQL4's AccountFreeMarginCheck page: if the free margin is insufficient, error 134 (ERR_NOT_ENOUGH_MONEY) is generated.

Forex margin calculator: margin an order needs

How to fix it

Check the margin before you send. Call AccountFreeMarginCheck(Symbol(), OP_BUY or OP_SELL, lots) before OrderSend() and send only if it returns more than 0; otherwise cut the lots or skip the trade.

Source: MQL4 Reference: AccountFreeMarginCheck. No MQL4 code is shown because none here was compiled; adapt the steps to your EA.

The same error in MT5

MT5 returns it as a trade server code instead: MT5 error 10019: There is not enough money to complete the request.

Other MT4 errors

• MT4 error 0: No error returned
• MT4 error 1: No error returned, but the result is unknown
• MT4 error 2: Common error
• MT4 error 3: Invalid trade parameters
• MT4 error 130: Invalid stops
• MT4 error 131: Invalid trade volume
• MT4 error 132: Market is closed
• MT4 error 133: Trade is disabled
• MT4 error 136: Off quotes
• MT4 error 4051: Invalid function parameter value
• MT4 error 4107: Invalid price
• MT4 error 4111: Shorts are not allowed
• MT4 error 4112: Automated trading by Expert Advisors/Scripts disabled by trade server
• MT4 error 4200: Object already exists
• MT4 error 5004: Cannot open file