Custom program error

0x1fd48148

Appears in logs as custom program error: 0x1fd4

Anchor

Custom error #2148

“custom program error: 0x1fd4”

Code 8148 (0x1fd4) is not an Anchor framework error. Anchor programs number their own #[error_code] enum starting at 6000, so this is the 2149th variant (index 2148) of the error enum defined by the program you called.

Common causes

  • The program's instruction handler returned the error at index 2148 of its custom error enum. What that means depends entirely on the program.

How to fix it

  • Look at the program logs: Anchor prints Error Code: <Name>. Error Number: 8148. Error Message: <text> just before the failure.
  • Open the program's IDL (on an explorer or via anchor idl fetch <programId>) and find the errors entry with code 8148.
  • In the Rust source, count variants in the #[error_code] enum: variant 2148 (zero-based) is the one that fired.
Source definition ↗All Anchor errors →

How Anchor custom error numbers work

Every Anchor program declares its own errors with #[error_code]. Anchor assigns the first variant 6000, the second 6001, and so on, so they never collide with the framework’s own errors (100–5999). The hex you see in logs is simply that number in base 16: 6000 = 0x1770, 6001 = 0x1771, 6002 = 0x1772.

#[error_code]
pub enum MyError {
    #[msg("Amount must be greater than zero")]
    ZeroAmount,          // 6000 = 0x1770
    #[msg("Slippage tolerance exceeded")]
    SlippageExceeded,    // 6001 = 0x1771
    #[msg("Pool is paused")]
    PoolPaused,          // 6002 = 0x1772
}

To find out what 0x1fd4 means for the program you called, fetch its IDL and look at the errors array, or look for the Error Message: log line Anchor prints before the failure. The transaction decoder pulls these log lines out of a failed signature for you.

Decode another error

Try:

Nearby codes

0x1fd1Custom error #21450x1fd2Custom error #21460x1fd3Custom error #21470x1fd5Custom error #21490x1fd6Custom error #21500x1fd7Custom error #2151