# Errors

> Plach errors: the messages of failed swaps, liquidity changes, liquidity fees, pool creation and fee calls, what causes each one, and how to fix it.

This page is part of the Plach docs. Plach is the DEX `slimedragon.near/xyk` on the Intear DEX contract, `dex.intear.near`, and every call goes to that contract. https://docs.intear.tech/plach/llms-full.txt has all of its pages in one file, and https://docs.intear.tech/llms.txt lists every page of the Intear docs.

When Plach fails a call, the engine's error contains `[slimedragon.near/xyk] Dex panicked:` followed by the message, and nothing in the call changes. Some messages come after a line like `panicked at dexes/xyk/src/lib.rs:262:17:`, so match the message itself rather than `Dex panicked: <message>`. See the [engine's errors](https://docs.intear.tech/intear-dex/reference/errors.md) for everything around it, like balances and registrations.

## Any call

| Message | Cause |
| --- | --- |
| `This method can only be called directly, not in a transfer call` | The call doesn't come [directly](https://docs.intear.tech/intear-dex/guides/dexes.md#what-a-dex-sees) from the caller: a `DexCall` in the operations of a deposit |
| `Invalid args`, or `Failed to deserialize input from Borsh` for a `dex_view` | `args` isn't the Borsh of the method's arguments. See [Types](https://docs.intear.tech/plach/reference/types.md) |
| `Pool not found`, `Pool <id> not found` | No pool with this ID |
| `No assets should be attached`, `No assets other than NEAR should be attached`, `No assets other than the two pool assets should be attached` | `attached_assets` has assets the method doesn't take |
| `Not enough near attached for storage. Required: <cost>, attached: <amount>` | Attach more NEAR. What's left is sent back |

## Swaps

| Message | Cause |
| --- | --- |
| `Invalid message` | `message` isn't a [route](https://docs.intear.tech/plach/guides/swaps.md#the-message) |
| `No routes`, `Route has no pools` | An empty list of routes or pools |
| `No pools created` | A route through the [last created pool](https://docs.intear.tech/plach/guides/swaps.md#the-last-created-pool) before any pool exists |
| `Route fractions must add up to 100%` | The `fraction`s of the routes don't add up to 1000000 |
| `Pool <id> doesn't have <asset>` | A pool of the route doesn't have the asset that comes into it |
| `Route doesn't end in asset out` | The last pool of a route doesn't output `asset_out` |
| `Pool is empty` | The pool has no liquidity |
| `Amount must be greater than 0` | A swap of 0, a split so small that a route got 0, or a pool of a route that put out 0 |
| `Amount must be less than out balance` | An exact output that would take all of the pool's balance |
| `Quote asset liquidity can't go lower than the initial phantom liquidity` | A sale in a launch pool for more of the quote asset than buyers put in |
| `Fee discount expired` | The [fee discount](https://docs.intear.tech/plach/guides/fees.md#fee-discounts) is past its block height. Get a new quote |
| `Fee discount is for another route`, `Fee discount is for other assets`, `Fee discount is for another amount`, `Fee discount is for another trader` | The swap isn't the one the discount was signed for |
| `Fee discount signature verification failed` | The signature isn't by the fee discount signer. An Ed25519 signature must be exactly 64 bytes: another length fails with ``called `Result::unwrap()` on an `Err` value`` |
| `Fee discount can't exceed 100%` | The signed `fee_discount` is above 1000000 |
| `Fee discounts are disabled on this dex` | There's no fee discount signer |

## Liquidity

| Message | Cause |
| --- | --- |
| `User has not registered using register_liquidity` | [Register](https://docs.intear.tech/plach/guides/liquidity.md#register) for the pool's shares first |
| `Liquidity registration is only needed for public pools` | `register_liquidity` on a private or launch pool |
| `Asset 1 not found`, `Asset 2 not found` | `add_liquidity` without one of the pool's assets attached |
| `Amounts must be greater than 0`, `Can't mint zero shares` | Too little attached for any shares |
| `Slippage error` | Fewer shares than `min_shares_received`, or less of an asset than `min_assets_received` |
| `User has no shares`, `Not enough shares to remove` | Removing more shares than you have, or from a public pool you have no shares in |
| `Can't remove zero shares` | `shares_to_remove` is `Some(0)` |
| `Only pool owner can add liquidity`, `Only pool owner can remove liquidity` | The pool is private and you're not its owner |
| `Min shares received must not be specified for private pools` | Private pools have no shares |
| `Min shares received must not be specified for new pools` | `min_shares_received` when adding to a public pool that has no liquidity left |
| `Shares must be less than 1000000000000000000. 1000000000000000000 means remove 100% of pool` | `shares_to_remove` above 10<sup>18</sup> in a private pool |
| `Pool is locked and liquidity cannot be removed` | The private pool is [locked](https://docs.intear.tech/plach/guides/pools.md#lock-a-private-pool) |
| `Launch pools don't support adding liquidity after creation`, `Launch pools don't support removing liquidity after creation` | Launch pools only have the liquidity they were created with |
| `Only public pools have liquidity providers` | `set_liquidity_fee_payout` or `collect_liquidity_fees` on a private or launch pool |
| `Liquidity fees are already taken this way` | `set_liquidity_fee_payout` with the payout you have |

## Pools

| Message | Cause |
| --- | --- |
| `Assets must be different` | Both assets of `create_pool` are the same |
| `Only NEAR, NEP-141, and NEP-245 assets are supported` | An NFT as a pool asset |
| `Near should be attached for storage` | `create_pool` without NEAR attached |
| `No assets other than NEAR and initial liquidity should be attached`, `No assets other than NEAR and launched asset should be attached` | `create_pool` with assets it doesn't take |
| `Public pools must be created with initial liquidity` | `initial_liquidity` is `None` for a public pool |
| `Public pools must be created with the creator's fee payout type specified` | `creator_fee_payout_type` is `None` for a public pool |
| `Only public pools have liquidity providers that take fees` | `creator_fee_payout_type` for a private or launch pool |
| `Too many pools` | Pool IDs go up to 4294967294 |
| `Initial liquidity amounts must be greater than 0` | An amount of 0 in `initial_liquidity` |
| `Attached <asset> must be equal to its initial liquidity` | Attach exactly the initial liquidity of each asset |
| `Not enough NEAR attached for initial liquidity and storage` | The attached NEAR is less than the NEAR of `initial_liquidity`. If it covers the liquidity but not the storage, the error is `Not enough near attached for storage` |
| `Launch pools take the launched asset from attached assets, not initial liquidity` | `initial_liquidity` for a launch pool. Attach the token instead |
| `Launched asset not found`, `Launched asset amount must be greater than 0` | A launch pool without the launched token attached |
| `Phantom liquidity must be greater than 0` | A launch pool needs phantom liquidity |
| `First asset in Launch pools must be NEAR` | A `LaunchV1` pool not quoted in NEAR. Use `LaunchLatest` |
| `Only pool owner can edit fees`, `Only pool owner can lock the pool` | You're not the pool's owner |
| `Fees cannot be edited for public pools`, `Fees cannot be edited for launch pools` | Only private pools' fees can change |
| `Pool is locked` | A locked pool's fees can't change |
| `Public pools cannot be locked`, `Launch pools are locked by default` | Only private pools can be locked |

## Fees

| Message | Cause |
| --- | --- |
| `Too many fee receivers` | More than 20 |
| `Fee must be less than 1000000`, `Fee must be less than 1000000 per receiver` | A fee of 100% or more |
| `Fees must add up to at most 900000` | The fees add up to more than 90% |
| `Protocol fee receiver can't be set by users` | `Protocol` as a receiver. An `Account` receiver for `plach.intear.near` fails earlier, with `Invalid args` |
| `Only liquidity providers can reinvest their fees` | An `Account` receiver with `Reinvest` |
| `Scheduled fee start time must be before end time`, `Start fee fraction must be greater than end fee` | A [scheduled fee](https://docs.intear.tech/plach/guides/fees.md#pool-fees) must go down over time |
| `Start fee fraction must be less than 1000000` | A scheduled fee starting at 100% or more |
| `Min fee fraction must be less than max fee fraction`, `Max fee fraction must be less than 1000000`, `Dynamic fee configuration is not implemented yet` | `Dynamic` fees aren't supported. An invalid one fails with one of the first two |
| `Asset <asset> already registered` | `register_fee_assets` with an asset you're registered for, by an earlier call, as an `OnlyOwner` receiver paid in it, or as a liquidity provider of a pool with it |
| `<account> has no fees in <asset> that anyone can claim` | `claim_fees_anyone` for an account that isn't an `Anyone` receiver in that asset |
| `Only owner can set the fee discount signer` | `set_fee_discount_signer` by anyone but `slimedragon.near` |