Errors

When Plach fails a call, the engine’s error contains [slimedragon.near/xyk] Dex panicked: <message>, and nothing in the call changes. See the engine’s errors for everything around it, like balances and registrations.

Any call

Message	Cause
Requires attached deposit of exactly 1 yoctoNEAR	The call isn’t authorized: a DexCall in the operations of a deposit
Invalid args	args isn’t the Borsh of the method’s arguments. See Types
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
No routes, Route has no pools	An empty list of routes or pools
Route fractions must add up to 100%	The fractions 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, or a split so small that a route got 0
Amount must be less than out balance	An exact output that would take all of the pool’s balance
NEAR liquidity can't go lower than the initial phantom liquidity, 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 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
Fee discounts are disabled on this dex	There’s no fee discount signer

Liquidity

Message	Cause
User has not registered using register_liquidity	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
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
Pool is locked and liquidity cannot be removed	The private pool is locked
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

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
Public pools must be created with initial liquidity	initial_liquidity is None for a public pool
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 doesn’t cover both
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
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, Old private pool cannot be locked	Only V2 private pools can be locked. Upgrade a V1 pool first
This pool is of the latest version	upgrade_pool on a V2 pool
This private pool is too old and doesn't support advanced fee configuration	A V2 fee configuration for a V1 private pool. Upgrade it first

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 fee receiver can't be changed	plach.intear.near as a receiver
Community fee receiver is only supported in Launch pools, Community fee receiver is only supported in Launch pools quoted in NEAR	A Community receiver elsewhere
Scheduled fee start time must be before end time, Start fee fraction must be greater than end fee	A scheduled fee must go down over time
Dynamic fee configuration is not implemented yet	Dynamic fees aren’t supported
At most 5 referrers are allowed, Each referrer can only be listed once, Referral fees must add up to at most 50000	Invalid referral fees in a swap’s message
Asset <asset> already registered	register_fee_assets with an asset you registered before
Account does not have a registered community fee	withdraw_community_fee for an account that isn’t a community receiver