{"record":{"id":"f5d435c6a91f642d","repo":"hyperledger/fabric","slug":"the-required-parameter-channelid-is-empty-rerun-f5d435","errorCode":null,"errorMessage":"The required parameter 'channelID' is empty. Rerun the command with -C flag","messagePattern":"The required parameter 'channelID' is empty\\. Rerun the command with -C flag","errorType":"validation","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/peer/lifecycle/chaincode/commit.go","lineNumber":63,"sourceCode":"\tName                     string\n\tVersion                  string\n\tHash                     []byte\n\tSequence                 int64\n\tEndorsementPlugin        string\n\tValidationPlugin         string\n\tValidationParameterBytes []byte\n\tCollectionConfigPackage  *pb.CollectionConfigPackage\n\tInitRequired             bool\n\tPeerAddresses            []string\n\tWaitForEvent             bool\n\tWaitForEventTimeout      time.Duration\n\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","sourceCodeStart":45,"sourceCodeEnd":81,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/internal/peer/lifecycle/chaincode/commit.go#L45-L81","documentation":"Input validation guard in CommitInput.Validate for the `peer lifecycle chaincode commit` CLI: it rejects the commit definition proposal when the channel ID is an empty string, i.e. the user omitted the required -C flag. Nothing has been sent to peers at this point; the command aborts before building the proposal.","triggerScenarios":"Calling CommitCmd-backed code (or constructing CommitInput directly) with ChannelID == \"\" and invoking Validate.","commonSituations":"Forgot the -C flag on `peer lifecycle chaincode commit`; environment variable/flag wiring (CORE_PEER_LOCALMSPID-style viper bindings) dropped the channel value; SDK scripts building CommitInput programmatically omitting ChannelID.","solutions":["Rerun the command with the -C flag, e.g. -C mychannel.","Ensure the channel is actually joined (peer channel list) since the flag value must match a real channel.","If using a wrapper script, confirm it forwards the channel argument.","When building CommitInput in code, set ChannelID before calling Commit."],"exampleFix":"// before\npeer lifecycle chaincode commit -o orderer:7050 --name mycc -v 1.0\n// after\npeer lifecycle chaincode commit -o orderer:7050 --name mycc -v 1.0 -C mychannel","handlingStrategy":"validation","validationCode":"if channelID == \"\" {\n    return errors.New(\"channelID required: use -C flag\")\n}","typeGuard":"func hasChannel(c *CommitInput) bool { return c != nil && c.ChannelID != \"\" }","tryCatchPattern":"if err := run(); err != nil {\n    if strings.Contains(err.Error(), \"channelID' is empty\") {\n        // re-run with -C or print usage\n    }\n}","preventionTips":["Always include -C in commit/approve commands.","Validate inputs in wrapper scripts before invoking the CLI.","Match the channel name to one listed by `peer channel list`."],"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"}