InsufficientFunds
Raydium AMM V4 · Custom(40) · 0x28
custom program error: 0x28
What it means
The account does not hold enough of the token or SOL this instruction tried to spend.
The program's own message: “Insufficient funds”
What to do
Top up the relevant balance (check both SOL for fees and the token being spent).
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).
Code 40 means something else in other programs
Custom codes are private to each program. Check which program actually raised it: it is the innermost failed call, not necessarily the program you called.