KToken transfer-create转账调用失败，寻求技术排查支持

问题背景 #

调用transfer-create函数向账户k:81df193e0d913bc87e127150efdaaee39584abbd2d0223ed8c9afb0b31cf9db2转账10枚KToken，执行后返回失败状态。

错误输出 #

{
  "gas": 600,
  "result": {
    "status": "failure",
    "error": {
      "callStack": [],
      "type": "EvalError",
      "message": "",
      "info": ""
    }
  },
  "reqKey": "VWFFgiP3fVdMpkwh3HoRNsyJQu5r21K7BrP6IYebTrg",
  "logs": "QJwoDEUraWkAdNhOm6XLEl1n-VfamHTwY-I-sMfMfGQ",
  "events": [
    {
      "params": [
        "sender00",
        "k:f89ef46927f506c70b6a58fd322450a936311dc6ac91f4ec3d8ef949608dbf1f",
        0.00006
      ],
      "name": "TRANSFER",
      "module": {
        "namespace": null,
        "name": "coin"
      },
      "moduleHash": "rE7DU8jlQL9x_MPYuniZJf5ICBTAEHAIFQCB4blofP4"
    }
  ],
  "metaData": {
    "blockTime": 1670022922909513,
    "prevBlockHash": "AZ6zoGd8Bj3OhyOWtf1MpFHGUuTCF1F9bizLDe6zhnA",
    "blockHash": "mwiya3qCmq6w120nxO_IXZegM8S_FREmm54CbbJQX0k",
    "blockHeight": 2101
  },
  "continuation": null,
  "txId": null
}

调用代码 #

调用语句 #

await transferCreateKTokenAccount(
  "ktoken", 
  "k:81df193e0d913bc87e127150efdaaee39584abbd2d0223ed8c9afb0b31cf9db2",
  10)

函数实现 #

async function transferCreateKTokenAccount(sender, newAccount, amount) {
  const cmd = {
    networkId: NETWORK_ID,
    keyPairs: [
      Object.assign(KEY_PAIR, {
        clist: [
          Pact.lang.mkCap(
            "GAS",
            "Capability to allow buying gas",
            "coin.GAS",
            []
          ).cap,
          Pact.lang.mkCap(
            "Transfer",
            "Capability to allow coin transfer",
            "coin.TRANSFER",
            [sender, newAccount, { decimal: amount }]
          ).cap
        ]
      })
    ],
    pactCode: `(free.ktoken.transfer-create  "${sender}" "${newAccount}" (read-keyset "account-keyset") ${amount})`,
    envData: {
      "account-keyset": {
        keys: [
          // Drop the k:
          newAccount.substr(2)
        ],
        pred: "keys-all"
      }
    },
    meta: {
      creationTime: creationTime(),
      ttl: 28000,
      gasLimit: 600,
      chainId: CHAIN_ID,
      gasPrice: 0.0000001,
      // sender: sender
      sender: `sender00`
    }
  };

  const response = await Pact.fetch.send(cmd, API_HOST);
  console.log(`Request key: ${response.requestKeys[0]}`);
  console.log("Transaction pending...");

  const txResult = await Pact.fetch.listen(
    { listen: response.requestKeys[0] },
    API_HOST
  );
  console.log("Transaction mined!");
  console.log(JSON.stringify(txResult, null, 2));
}

await transferCreateKTokenAccount(
  `ktoken`, 
  `k:81df193e0d913bc87e127150efdaaee39584abbd2d0223ed8c9afb0b31cf9db2`,
  10)

合约实现 #

;; ; --------------------------------------------------------------------------
;; ; Fungible-v2 Implementation

(defun transfer-create:string
  ( sender:string
    receiver:string
    receiver-guard:guard
    amount:decimal )

  @doc " Transfer to an account, creating it if it does not exist. "

  @model [ (property (conserves-mass amount))
           (property (> amount 0.0))
           (property (valid-account-id sender))
           (property (valid-account-id receiver))
           (property (!= sender receiver)) ]

  (with-capability (TRANSFER sender receiver amount)
    (debit sender amount)
    (credit receiver receiver-guard amount)
  )
)

失败原因分析 #

• Capability权限不匹配：合约中transfer-create使用的是TRANSFER capability，归属free.ktoken模块，但JS代码里声明的是coin.TRANSFER，权限校验不通过直接导致执行失败。正确的capability应该是free.ktoken.TRANSFER。
• Gas限额不足：当前设置的gasLimit为600，而创建新账户+转账的组合操作需要更多Gas，建议调高至2000或更高。
• Sender账户不一致：meta中的sender设为sender00，但实际转账发起账户是ktoken，Gas付费账户与转账账户不一致可能引发权限或余额问题，需将meta的sender改为ktoken。
• 参数类型显式声明缺失：合约中amount为decimal类型，JS代码直接拼接数字10，虽Pact会自动转换，但建议用(decimal ${amount})显式声明类型，避免潜在类型错误。

内容的提问来源于stack exchange，提问作者att