{"record":{"id":"b806ab6f4cfc1d58","repo":"hyperledger/fabric","slug":"the-required-parameter-sequence-is-empty-rerun-b806ab","errorCode":null,"errorMessage":"The required parameter 'sequence' is empty. Rerun the command with --sequence flag","messagePattern":"The required parameter 'sequence' is empty\\. Rerun the command with --sequence flag","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/peer/lifecycle/chaincode/commit.go","lineNumber":75,"sourceCode":"\tTxID                     string\n}\n\n// Validate the input for a CommitChaincodeDefinition proposal\nfunc (c *CommitInput) Validate() error {\n\tif c.ChannelID == \"\" {\n\t\treturn errors.New(\"The required parameter 'channelID' is empty. Rerun the command with -C flag\")\n\t}\n\n\tif c.Name == \"\" {\n\t\treturn errors.New(\"The required parameter 'name' is empty. Rerun the command with -n flag\")\n\t}\n\n\tif c.Version == \"\" {\n\t\treturn errors.New(\"The required parameter 'version' is empty. Rerun the command with -v flag\")\n\t}\n\n\tif c.Sequence == 0 {\n\t\treturn errors.New(\"The required parameter 'sequence' is empty. Rerun the command with --sequence flag\")\n\t}\n\n\treturn nil\n}\n\n// CommitCmd returns the cobra command for chaincode Commit\nfunc CommitCmd(c *Committer, cryptoProvider bccsp.BCCSP) *cobra.Command {\n\tchaincodeCommitCmd := &cobra.Command{\n\t\tUse:   \"commit\",\n\t\tShort: \"Commit the chaincode definition on the channel.\",\n\t\tLong:  \"Commit the chaincode definition on the channel.\",\n\t\tRunE: func(cmd *cobra.Command, args []string) error {\n\t\t\tif c == nil {\n\t\t\t\t// set input from CLI flags\n\t\t\t\tinput, err := c.createInput()\n\t\t\t\tif err != nil {\n\t\t\t\t\treturn err\n\t\t\t\t}","sourceCodeStart":57,"sourceCodeEnd":93,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/internal/peer/lifecycle/chaincode/commit.go#L57-L93","documentation":"Returned by CommitInput.Validate when the sequence number is zero/unset for a commit invocation — the mandatory --sequence flag was omitted. Sequence is the definition's ledger sequence and must be a positive integer.","triggerScenarios":"Constructing CommitInput with Sequence == 0 and calling Validate — e.g. `peer lifecycle chaincode commit` run without --sequence.","commonSituations":"First commit forgetting --sequence 1; subsequent upgrades reusing an old sequence; not checking queryapproved for the next expected sequence.","solutions":["Rerun with --sequence set to the approved definition's sequence, e.g. --sequence 1.","Run `peer lifecycle chaincode queryapproved -C mychannel -n mycc` to find the sequence.","For upgrades, increment the sequence from the previous commit.","In code, set CommitInput.Sequence before calling Commit."],"exampleFix":"// before\npeer lifecycle chaincode commit -C mychannel -n mycc -v 1.0\n// after\npeer lifecycle chaincode commit -C mychannel -n mycc -v 1.0 --sequence 1","handlingStrategy":"validation","validationCode":"if sequence == 0 {\n    return errors.New(\"sequence required: use --sequence flag\")\n}","typeGuard":"func hasSequence(c *CommitInput) bool { return c != nil && c.Sequence > 0 }","tryCatchPattern":"if err := run(); err != nil {\n    if strings.Contains(err.Error(), \"parameter 'sequence' is empty\") {\n        // re-run with --sequence from queryapproved\n    }\n}","preventionTips":["Always pass --sequence; use 1 for the first commit.","Run queryapproved to confirm the current sequence before committing.","Increment the sequence for each upgrade."],"tags":["hyperledger-fabric","input-validation","cli-flags"],"backgroundTag":"missing-required-argument","analyzedSha":"2736b63f8fd5932511d56fe68b7039d15977f7f6","analyzedAt":"2026-09-04T08:52:36.465Z","contentChangedAt":"2026-09-04T08:52:36.465Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}