AirdropNotStarted (100)

Airdrop has not started yet

This occurs when a user tries to claim before the `starts_at` time has passed.

AirdropEnded (101)

Airdrop has already ended

Thrown when the current time exceeds the `ends_at` timestamp.

InvalidOwner (200)

Transaction sender is not the owner

Happens when someone tries to update or close airdrops they didn’t create.

ControllerMismatch (204)

Mismatched controller

Returned when the controller provided in the instruction does not match the airdrop’s controller.

InvalidProof (500)

Invalid merkle proof

Triggered when a user submits a malformed or incorrect Merkle proof during a claim.

AlreadyClaimed (501)

Tokens already claimed

The bitmap indicates that this user already claimed their tokens.

InsufficientDeposit (600)

Insufficient SOL deposit

Occurs when the fee payer doesn't include enough lamports during airdrop or controller creation.

InvalidAmount (701)

Invalid amount

Occurs when the amount is 0 or exceeds expected bounds during creation or claim.

Overflow (702)

Arithmetic overflow

Any math operation (like summing amounts) that causes a u64 overflow will result in this error.