> ## Documentation Index > Fetch the complete documentation index at: https://docs.therootnetwork.com/llms.txt > Use this file to discover all available pages before exploring further. # Xls20 ## Calls ### enableXls20Compatibility Enables XLS-20 compatibility on a collection. However, this will remove the ability to change the collection metadata. * Collection must not have any tokens minted * Caller must be collection owner **Namespace** ``` api.tx.xls20.enableXls20Compatibility ``` **Type** ``` function enableXls20Compatibility( collection_id: u32 ) ``` ### fulfillXls20Mint Submit XLS-20 token ids to The Root Network Only callable by the trusted relayer account Can apply multiple mappings from the same collection in one transaction **Namespace** ``` api.tx.xls20.fulfillXls20Mint ``` **Type** ``` function fulfillXls20Mint( collection_id: u32, token_mappings: Vec<(u32,[u8;64])> ) ``` ### reRequestXls20Mint **Namespace** ``` api.tx.xls20.reRequestXls20Mint ``` **Type** ``` function reRequestXls20Mint( collection_id: u32, serial_numbers: Vec ) ``` ### setRelayer Set the relayer address **Namespace** ``` api.tx.xls20.setRelayer ``` **Type** ``` function setRelayer( relayer: SeedPrimitivesSignatureAccountId20 ) ``` ### setXls20Fee Set the xls20 mint fee which is paid per token by the collection owner This covers the additional costs incurred by the relayer for the following: * Minting the token on XRPL * Calling fulfill\_xls20\_mint on The Root Network **Namespace** ``` api.tx.xls20.setXls20Fee ``` **Type** ``` function setXls20Fee( new_fee: u128 ) ``` ## Storage ### relayer The permissioned relayer **Namespace** ``` api.query.xls20.relayer ``` **Type** ``` function relayer( ): Option ``` ### xls20MintFee The extra cost of minting an XLS-20 compatible NFT **Namespace** ``` api.query.xls20.xls20MintFee ``` **Type** ``` function xls20MintFee( ): u128 ``` ### xls20TokenMap Maps from TRN native token\_id to XLS-20 TokenId **Namespace** ``` api.query.xls20.xls20TokenMap ``` **Type** ``` function xls20TokenMap( u32, u32 ): Option<[u8;64]> ``` ## Events ### RelayerSet A new relayer has been set **Namespace** ``` api.events.xls20.RelayerSet ``` **Type** ``` type RelayerSet = { account: SeedPrimitivesSignatureAccountId20 } ``` ### Xls20CompatibilityEnabled A collection has had XLS-20 compatibility enabled **Namespace** ``` api.events.xls20.Xls20CompatibilityEnabled ``` **Type** ``` type Xls20CompatibilityEnabled = { collection_id: u32 } ``` ### Xls20MappingSet A new XLS20 mapping has been set **Namespace** ``` api.events.xls20.Xls20MappingSet ``` **Type** ``` type Xls20MappingSet = { collection_id: u32, mappings: Vec<(u32,[u8;64])> } ``` ### Xls20MintFeePaid Additional mint fee for XLS-20 mint has been paid to relayer **Namespace** ``` api.events.xls20.Xls20MintFeePaid ``` **Type** ``` type Xls20MintFeePaid = { collection_owner: SeedPrimitivesSignatureAccountId20, total_fee: u128 } ``` ### Xls20MintFeeSet A new Xls20 Mint Fee has been set **Namespace** ``` api.events.xls20.Xls20MintFeeSet ``` **Type** ``` type Xls20MintFeeSet = { new_fee: u128 } ``` ### Xls20MintRequest Request sent to XLS20 Relayer **Namespace** ``` api.events.xls20.Xls20MintRequest ``` **Type** ``` type Xls20MintRequest = { collection_id: u32, serial_numbers: Vec, token_uris: Vec } ``` ## Errors ### MappingAlreadyExists There is already a Root native -> XLS-20 mapping for this token **Namespace** ``` api.errors.xls20.MappingAlreadyExists ``` ### NotCollectionOwner No the owner of the collection **Namespace** ``` api.errors.xls20.NotCollectionOwner ``` ### NoToken The NFT does not exist **Namespace** ``` api.errors.xls20.NoToken ``` ### NotRelayer The caller is not the relayer and does not have permission to perform this action **Namespace** ``` api.errors.xls20.NotRelayer ``` ### NotXLS20Compatible The collection is not compatible with XLS-20 **Namespace** ``` api.errors.xls20.NotXLS20Compatible ``` ### Xls20MintFeeTooLow The supplied fee for minting XLS-20 tokens is too low **Namespace** ``` api.errors.xls20.Xls20MintFeeTooLow ``` undefined