UserFuelOverflowThresholdNotMet
Drift V2 · Custom(6310) · 0x18a6
custom program error: 0x18a6
What it means
An arithmetic operation inside the program went out of range. In exchanges this usually means the amount, price or liquidity at that moment produced a number the pool cannot represent, often a trade far larger than the pool can absorb.
The program's own message: “User fuel overflow threshold not met”
What to do
The error name is the program's own diagnosis. Paste the failed transaction into TxWhy to see which instruction raised it and with which accounts.
Have the transaction that failed with this?
Paste its signature. TxWhy shows the exact instruction and inner call that raised the error, and rebuilds the transaction when the cause is one it can fix (compute limit, expired blockhash, priority fee, stale swap quote).