> ## Documentation Index > Fetch the complete documentation index at: https://docs.berachain.com/llms.txt > Use this file to discover all available pages before exploring further. # Error Codes > BEX smart contract error codes and meanings. All error codes for BEX core contracts are defined in `BalancerErrors.sol`. Comments and context for errors are provided below: ## Math | Code | Error | Comment | | ---- | ------------------------ | --------------------------------------------------------------- | | 000 | ADD\_OVERFLOW | | | 001 | SUB\_OVERFLOW | | | 002 | SUB\_UNDERFLOW | | | 003 | MUL\_OVERFLOW | | | 004 | ZERO\_DIVISION | | | 005 | DIV\_INTERNAL | Multiplication overflow during FixedPoint Division | | 006 | X\_OUT\_OF\_BOUNDS | Invalid x in ExpMath.pow(x, y) | | 007 | Y\_OUT\_OF\_BOUNDS | Invalid y in ExpMath.pow(x, y) | | 008 | PRODUCT\_OUT\_OF\_BOUNDS | In LogExpMath.pow(x, y), error computing x^y as exp(y \* ln(x)) | | 009 | INVALID\_EXPONENT | In LogExpMath.exp(x) = e^x; x out of bounds | ## Input | Code | Error | Comment | | ---- | ----------------------- | ------------------------------------------------------------------------ | | 100 | OUT\_OF\_BOUNDS | | | 101 | UNSORTED\_ARRAY | See UNSORTED\_TOKENS | | 102 | UNSORTED\_TOKENS | Tokens must be sorted in address order on pool registration | | 103 | INPUT\_LENGTH\_MISMATCH | Used to ensure array inputs intended to be parallel have the same length | | 104 | ZERO\_TOKEN | Address to be interpreted as a token cannot be 0 | | 105 | INSUFFICIENT\_DATA | Used to ensure minimum bytes length | ## Shared pools | Code | Error | Comment | | ---- | -------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 200 | MIN\_TOKENS | All pools must contain at least two tokens | | 201 | MAX\_TOKENS | Token count exceeds the maximum for a given pool type | | 202 | MAX\_SWAP\_FEE\_PERCENTAGE | | | 203 | MIN\_SWAP\_FEE\_PERCENTAGE | | | 204 | MINIMUM\_BPT | On pool initialization, a small amount of BPT is minted to the zero address (keeps math well behaved). If initial balances are too small, initialization can fail | | 205 | CALLER\_NOT\_VAULT | Certain pool callbacks need to be external, but could be exploited if called by anyone but the Vault | | 206 | UNINITIALIZED | Pools must be initialized with a special "Init" join, before they can be joined by LPs | | 207 | BPT\_IN\_MAX\_AMOUNT | Slippage/front-running protection check failed on a pool exit | | 208 | BPT\_OUT\_MIN\_AMOUNT | Slippage/front-running protection check failed on a pool join | | 209 | EXPIRED\_PERMIT | | | 210 | NOT\_TWO\_TOKENS | Pools with oracles are limited to two tokens (e.g., WeightedPool2Tokens and MetastablePools). A pool with the TWO\_TOKEN specialization must have exactly two tokens | | 211 | DISABLED | Pool factories can be disabled to prevent new pools being created | ## Pools | Code | Error | Comment | | ---- | ------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------ | | 300 | MIN\_AMP | Amplification factor out of range (Stable/Metastable pools) | | 301 | MAX\_AMP | | | 302 | MIN\_WEIGHT | Weighted Pool minimum weight | | 303 | MAX\_STABLE\_TOKENS | | | 304 | MAX\_IN\_RATIO | Token in unbalanced the pool too much on a swap | | 305 | MAX\_OUT\_RATIO | Token out unbalanced the pool too much on a swap | | 306 | MIN\_BPT\_IN\_FOR\_TOKEN\_OUT | Disproportionate exit unbalanced the pool too much | | 307 | MAX\_OUT\_BPT\_FOR\_TOKEN\_IN | Disproportionate join unbalanced the pool too much | | 308 | NORMALIZED\_WEIGHT\_INVARIANT | Weighted Pool normalized weights must add to 1.0 | | 309 | INVALID\_TOKEN | | | 310 | UNHANDLED\_JOIN\_KIND | Some joins are pool type-specific | | 311 | ZERO\_INVARIANT | Pool balances must be > 0 | | 312 | ORACLE\_INVALID\_SECONDS\_QUERY | The "ago" timestamp when querying the oracle must be in the past | | 313 | ORACLE\_NOT\_INITIALIZED | Cannot query an oracle with no data | | 314 | ORACLE\_QUERY\_TOO\_OLD | Cannot query before the oracle's earliest data sample | | 315 | ORACLE\_INVALID\_INDEX | Cannot query a sample outside the buffer (1024) | | 316 | ORACLE\_BAD\_SECS | Oracle query window must have non-zero duration | | 317 | AMP\_END\_TIME\_TOO\_CLOSE | Amplification parameter change has less than the minimum duration | | 318 | AMP\_ONGOING\_UPDATE | Cannot start an amplification parameter update if one is already ongoing | | 319 | AMP\_RATE\_TOO\_HIGH | The requested amplification parameter change is too fast (cannot halve or double over less than a day) | | 320 | AMP\_NO\_ONGOING\_UPDATE | Cannot cancel an update if there isn't one | | 321 | STABLE\_INVARIANT\_DIDNT\_CONVERGE | | | 322 | STABLE\_GET\_BALANCE\_DIDNT\_CONVERGE | | | 323 | RELAYER\_NOT\_CONTRACT | | | 324 | BASE\_POOL\_RELAYER\_NOT\_CALLED | | | 325 | REBALANCING\_RELAYER\_REENTERED | | | 326 | GRADUAL\_UPDATE\_TIME\_TRAVEL | start > end time in a gradual weights update | | 327 | SWAPS\_DISABLED | | | 328 | CALLER\_IS\_NOT\_LBP\_OWNER | | | 329 | PRICE\_RATE\_OVERFLOW | Rate returned from a rateProvider must fit in 128 bits | | 330 | INVALID\_JOIN\_EXIT\_KIND\_WHILE\_SWAPS\_DISABLED | Investment pools only allow proportional joins and exits when swaps are disabled (to prevent unbalancing the pool) | | 331 | WEIGHT\_CHANGE\_TOO\_FAST | Gradual weight update duration too short (minimum 1 day) | | 332 | LOWER\_GREATER\_THAN\_UPPER\_TARGET | Invalid Linear Pool operating range | | 333 | UPPER\_TARGET\_TOO\_HIGH | Linear Pool max balance must fit in 112 bits | | 334 | UNHANDLED\_BY\_LINEAR\_POOL | Some joins/exits are pool type-specific | | 335 | OUT\_OF\_TARGET\_RANGE | Cannot reset Linear Pool targets if pool is unbalanced | | 336 | UNHANDLED\_EXIT\_KIND | Some exits are pool type-specific | | 337 | UNAUTHORIZED\_EXIT | Management fees can only be collected by the pool owner | | 338 | MAX\_MANAGEMENT\_SWAP\_FEE\_PERCENTAGE | | | 339 | UNHANDLED\_BY\_MANAGED\_POOL | Some joins/exits are pool type-specific | | 340 | UNHANDLED\_BY\_PHANTOM\_POOL | Some joins/exits are pool type-specific | | 341 | TOKEN\_DOES\_NOT\_HAVE\_RATE\_PROVIDER | | | 342 | INVALID\_INITIALIZATION | | | 343 | OUT\_OF\_NEW\_TARGET\_RANGE | | | 344 | FEATURE\_DISABLED | | | 345 | UNINITIALIZED\_POOL\_CONTROLLER | | | 346 | SET\_SWAP\_FEE\_DURING\_FEE\_CHANGE | | | 347 | SET\_SWAP\_FEE\_PENDING\_FEE\_CHANGE | | | 348 | CHANGE\_TOKENS\_DURING\_WEIGHT\_CHANGE | | | 349 | CHANGE\_TOKENS\_PENDING\_WEIGHT\_CHANGE | | | 350 | MAX\_WEIGHT | | | 351 | UNAUTHORIZED\_JOIN | | | 352 | MAX\_MANAGEMENT\_AUM\_FEE\_PERCENTAGE | | | 353 | FRACTIONAL\_TARGET | | | 354 | ADD\_OR\_REMOVE\_BPT | | | 355 | INVALID\_CIRCUIT\_BREAKER\_BOUNDS | | | 356 | CIRCUIT\_BREAKER\_TRIPPED | | | 357 | MALICIOUS\_QUERY\_REVERT | | | 358 | JOINS\_EXITS\_DISABLED | | ## Lib | Code | Error | Comment | | ---- | ---------------------------------------- | ----------------------------------------------------------------------- | | 400 | REENTRANCY | | | 401 | SENDER\_NOT\_ALLOWED | | | 402 | PAUSED | | | 403 | PAUSE\_WINDOW\_EXPIRED | | | 404 | MAX\_PAUSE\_WINDOW\_DURATION | | | 405 | MAX\_BUFFER\_PERIOD\_DURATION | | | 406 | INSUFFICIENT\_BALANCE | | | 407 | INSUFFICIENT\_ALLOWANCE | | | 408 | ERC20\_TRANSFER\_FROM\_ZERO\_ADDRESS | | | 409 | ERC20\_TRANSFER\_TO\_ZERO\_ADDRESS | | | 410 | ERC20\_MINT\_TO\_ZERO\_ADDRESS | | | 411 | ERC20\_BURN\_FROM\_ZERO\_ADDRESS | | | 412 | ERC20\_APPROVE\_FROM\_ZERO\_ADDRESS | | | 413 | ERC20\_APPROVE\_TO\_ZERO\_ADDRESS | | | 414 | ERC20\_TRANSFER\_EXCEEDS\_ALLOWANCE | | | 415 | ERC20\_DECREASED\_ALLOWANCE\_BELOW\_ZERO | | | 416 | ERC20\_TRANSFER\_EXCEEDS\_BALANCE | | | 417 | ERC20\_BURN\_EXCEEDS\_ALLOWANCE | | | 418 | SAFE\_ERC20\_CALL\_FAILED | | | 419 | ADDRESS\_INSUFFICIENT\_BALANCE | | | 420 | ADDRESS\_CANNOT\_SEND\_VALUE | | | 421 | SAFE\_CAST\_VALUE\_CANT\_FIT\_INT256 | | | 422 | GRANT\_SENDER\_NOT\_ADMIN | In AccessControl, the caller of `grantRole` must be an admin | | 423 | REVOKE\_SENDER\_NOT\_ADMIN | In AccessControl, the caller of `revokeRole` must be an admin | | 424 | RENOUNCE\_SENDER\_NOT\_ALLOWED | In AccessControl, callers can only `renounceRole` for their own account | | 425 | BUFFER\_PERIOD\_EXPIRED | | | 426 | CALLER\_IS\_NOT\_OWNER | | | 427 | NEW\_OWNER\_IS\_ZERO | | | 428 | CODE\_DEPLOYMENT\_FAILED | | | 429 | CALL\_TO\_NON\_CONTRACT | | | 430 | LOW\_LEVEL\_CALL\_FAILED | | | 431 | NOT\_PAUSED | | | 432 | ADDRESS\_ALREADY\_ALLOWLISTED | | | 433 | ADDRESS\_NOT\_ALLOWLISTED | | | 434 | ERC20\_BURN\_EXCEEDS\_BALANCE | | | 435 | INVALID\_OPERATION | | | 436 | CODEC\_OVERFLOW | | | 437 | IN\_RECOVERY\_MODE | | | 438 | NOT\_IN\_RECOVERY\_MODE | | | 439 | INDUCED\_FAILURE | | | 440 | EXPIRED\_SIGNATURE | | | 441 | MALFORMED\_SIGNATURE | | | 442 | SAFE\_CAST\_VALUE\_CANT\_FIT\_UINT64 | | | 443 | UNHANDLED\_FEE\_TYPE | | | 444 | BURN\_FROM\_ZERO | | ## Vault | Code | Error | Comment | | ---- | ---------------------------------- | ----------------------------------------------------------------------- | | 500 | INVALID\_POOL\_ID | | | 501 | CALLER\_NOT\_POOL | Some Vault hooks can only be called by the pool (e.g., register tokens) | | 502 | SENDER\_NOT\_ASSET\_MANAGER | | | 503 | USER\_DOESNT\_ALLOW\_RELAYER | Relayers must be allowed by both governance and the user account | | 504 | INVALID\_SIGNATURE | | | 505 | EXIT\_BELOW\_MIN | Exit would yield fewer than the user-supplied minimum tokens out | | 506 | JOIN\_ABOVE\_MAX | Join would cost more than the user-supplied maximum tokens in | | 507 | SWAP\_LIMIT | Swap violates user-supplied limits (min out or max in) | | 508 | SWAP\_DEADLINE | Swap transaction not mined within the specified deadline | | 509 | CANNOT\_SWAP\_SAME\_TOKEN | | | 510 | UNKNOWN\_AMOUNT\_IN\_FIRST\_SWAP | A batch swap must start with a non-zero amount in | | 511 | MALCONSTRUCTED\_MULTIHOP\_SWAP | | | 512 | INTERNAL\_BALANCE\_OVERFLOW | Unused in current code | | 513 | INSUFFICIENT\_INTERNAL\_BALANCE | | | 514 | INVALID\_ETH\_INTERNAL\_BALANCE | Cannot transfer native ETH to/from internal balance | | 515 | INVALID\_POST\_LOAN\_BALANCE | Flashloan transactions must repay the loan in the same transaction | | 516 | INSUFFICIENT\_ETH | | | 517 | UNALLOCATED\_ETH | Unused in current code | | 518 | ETH\_TRANSFER | Relayers cannot receive ETH directly (only through the Vault) | | 519 | CANNOT\_USE\_ETH\_SENTINEL | Internal Balance transfers cannot use ETH | | 520 | TOKENS\_MISMATCH | | | 521 | TOKEN\_NOT\_REGISTERED | | | 522 | TOKEN\_ALREADY\_REGISTERED | | | 523 | TOKENS\_ALREADY\_SET | | | 524 | TOKENS\_LENGTH\_MUST\_BE\_2 | | | 525 | NONZERO\_TOKEN\_BALANCE | | | 526 | BALANCE\_TOTAL\_OVERFLOW | | | 527 | POOL\_NO\_TOKENS | | | 528 | INSUFFICIENT\_FLASH\_LOAN\_BALANCE | | ## Fees | Code | Error | Comment | | ---- | --------------------------------------- | ------- | | 600 | SWAP\_FEE\_PERCENTAGE\_TOO\_HIGH | | | 601 | FLASH\_LOAN\_FEE\_PERCENTAGE\_TOO\_HIGH | | | 602 | INSUFFICIENT\_FLASH\_LOAN\_FEE\_AMOUNT | | ## FeeSplitter | Code | Error | Comment | | ---- | ------------------------------------ | ------- | | 700 | SPLITTER\_FEE\_PERCENTAGE\_TOO\_HIGH | | ## Misc | Code | Error | Comment | | ---- | ------------------- | ------- | | 998 | UNIMPLEMENTED | | | 999 | SHOULD\_NOT\_HAPPEN | |