Program Reference

Instruction Discriminator Table

Each instruction is identified by the first byte of its instruction data. There is no Anchor-style hash prefix — just a raw u8 at index 0.

Disc (hex)	Disc (dec)	Instruction	Section
`0x00`	0	`Initialize`	Core
`0x01`	1	`Deposit`	Core
`0x02`	2	`Withdraw`	Core
`0x03`	3	`Borrow`	Core
`0x04`	4	`Repay`	Core
`0x05`	5	`Liquidate`	Core
`0x06`	6	`FlashBorrow`	Flash Loans
`0x07`	7	`FlashRepay`	Flash Loans
`0x08`	8	`EnablePrivacy`	Privacy
`0x09`	9	`PrivateDeposit`	Privacy
`0x0A`	10	`PrivateBorrow`	Privacy
`0x0B`	11	`PrivateRepay`	Privacy
`0x0C`	12	`PrivateWithdraw`	Privacy
`0x0D`	13	`UpdatePool`	Oracle & Admin
`0x0E`	14	`PausePool`	Oracle & Admin
`0x0F`	15	`ResumePool`	Oracle & Admin
`0x10`	16	`CollectFees`	Oracle & Admin
`0x11`	17	`IkaRegister`	Ika
`0x12`	18	`IkaRelease`	Ika
`0x13`	19	`IkaSign`	Ika
`0x14`	20	`UpdateOraclePrice`	Oracle & Admin

Account Discriminators

Account	Discriminator (ASCII)	Bytes
`LendingPool`	`VEILPOOL`	`[86, 69, 73, 76, 80, 79, 79, 76]`
`UserPosition`	`VEILPOS!`	`[86, 69, 73, 76, 80, 79, 83, 33]`
`EncryptedPosition`	`VEILENC!`	`[86, 69, 73, 76, 69, 78, 67, 33]`
`IkaDwalletPosition`	`VEILIKA!`	`[86, 69, 73, 76, 73, 75, 65, 33]`

Error Codes

All errors are emitted as ProgramError::Custom(code).

Code	Name	Description
6000	`MissingSignature`	Caller is not a signer when required
6001	`AccountNotWritable`	Account is not writable when required
6002	`InvalidAccountOwner`	Account owner is not this program
6003	`InvalidDiscriminator`	Account discriminator does not match
6004	`InvalidPda`	PDA derivation mismatch
6005	`InvalidInstructionData`	Instruction data is malformed
6006	`ZeroAmount`	Amount is zero
6007	`InsufficientLiquidity`	Pool has insufficient liquidity
6008	`ExceedsCollateralFactor`	Borrow would exceed the LTV cap
6009	`Undercollateralised`	Health factor is below 1.0
6010	`PositionHealthy`	Liquidation attempted on healthy position
6011	`ExceedsCloseFactor`	Liquidation repay exceeds close-factor cap
6012	`ExceedsDepositBalance`	Withdraw amount exceeds deposited balance
6013	`ExceedsDebtBalance`	Repay amount exceeds outstanding debt
6014	`NoBorrow`	No debt to repay or liquidate
6015	`MathOverflow`	Arithmetic overflow in calculation
6016	`TransferFailed`	Token transfer failed
6017	`InvalidTimestamp`	Timestamp went backwards
6018	`FlashLoanActive`	Flash loan already in progress
6019	`FlashLoanNotActive`	FlashRepay called with no active flash loan
6020	`FlashLoanRepayInsufficient`	Repayment amount is less than borrowed + fee
6021	`Unauthorized`	Signer is not the pool authority
6022	`PoolPaused`	Pool is paused — deposits and borrows blocked
6023	`NoFeesToCollect`	No accumulated fees to collect
6024	`OracleInvalid`	Pyth account has bad magic, type, or negative price
6025	`OraclePriceStale`	Pyth aggregate status is not Trading
6026	`OraclePriceFeedMismatch`	Feed address does not match the anchored feed
6027	`OracleConfTooWide`	Confidence interval exceeds 2 % of price

Data Conventions

All integers are little-endian
Rates are WAD-scaled (WAD = 1_000_000_000_000_000_000, i.e. 1e18). A rate of 5% is stored as 50_000_000_000_000_000.
Prices from Pyth are raw with exponent. USD value = oracle_price × 10^oracle_expo.
Timestamps are Unix seconds (i64).