# Trade Failure Check

1. **Slippage Ratio**
   * **Manual buying/selling**: It is recommended to set to automatic slippage, no manual adjustment needed.
   * **Automated buy/sell orders**: Recommended slippage setting is 30%-35%.
   * **For new or highly popular offerings**: It is suggested to set the slippage to 50% or higher.
2. **Priority Fee**
   * **Transactions without speed requirements**: Recommended setting is 0.002 SOL.
   * **Automated buy/sell orders**: Priority fee should be set to 0.006 SOL or higher.
   * **Transactions over 1 SOL**: Priority fee should be set to more than 0.01 SOL.
3. **Anti-Sandwich Mode**
   * **Enable anti-sandwich mode**: Effectively prevents sandwich attacks by MEV bots.
   * **Note**: Once enabled, the priority fee should be set to at least 0.002 SOL.
4. **Possible Reasons for Abnormal Trade Prices**
   * **Sandwich bot attack**: Trades manipulated by MEV bots, leading to abnormal prices.
   * **Too high slippage settings**: A high slippage ratio might cause the trade price to deviate from expectations.
