{"record":{"id":"09c6c61c16e75db1","repo":"hyperledger/fabric","slug":"msp-s-is-not-defined-on-channel","errorCode":null,"errorMessage":"MSP %s is not defined on channel","messagePattern":"MSP (.+?) is not defined on channel","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"msp/mspmgrimpl.go","lineNumber":89,"sourceCode":"\treturn mgr.mspsMap, nil\n}\n\n// DeserializeIdentity returns an identity given its serialized version supplied as argument\nfunc (mgr *mspManagerImpl) DeserializeIdentity(serializedID []byte) (Identity, error) {\n\tif !mgr.up {\n\t\treturn nil, errors.New(\"channel doesn't exist\")\n\t}\n\t// We first deserialize to a SerializedIdentity to get the MSP ID\n\tsId := &msp.SerializedIdentity{}\n\terr := proto.Unmarshal(serializedID, sId)\n\tif err != nil {\n\t\treturn nil, errors.Wrap(err, \"could not deserialize a SerializedIdentity\")\n\t}\n\n\t// we can now attempt to obtain the MSP\n\tmsp := mgr.mspsMap[sId.Mspid]\n\tif msp == nil {\n\t\treturn nil, errors.Errorf(\"MSP %s is not defined on channel\", sId.Mspid)\n\t}\n\n\tswitch t := msp.(type) {\n\tcase *bccspmsp:\n\t\treturn t.deserializeIdentityInternal(sId.IdBytes)\n\tcase *idemixMSPWrapper:\n\t\treturn t.deserializeIdentityInternal(sId.IdBytes)\n\tdefault:\n\t\treturn t.DeserializeIdentity(serializedID)\n\t}\n}\n\nfunc (mgr *mspManagerImpl) IsWellFormed(identity *msp.SerializedIdentity) error {\n\t// Iterate over all the MSPs by their providers, and find at least 1 MSP that can attest\n\t// that this identity is well formed\n\tfor _, mspList := range mgr.mspsByProviders {\n\t\t// We are guaranteed to have at least 1 MSP in each list from the initialization at Setup()\n\t\tmsp := mspList[0]","sourceCodeStart":71,"sourceCodeEnd":107,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/msp/mspmgrimpl.go#L71-L107","documentation":"The SerializedIdentity parsed fine, but its Mspid is not present in the channel's mspsMap — no MSP with that ID was configured for this channel. The manager cannot validate an identity from an MSP it does not know. This is an identity-vs-channel-MSP-configuration mismatch.","triggerScenarios":"DeserializeIdentity called with an identity whose Mspid was never added to the channel config (no corresponding MSP defined in the channel's MSP list), or after the org's MSP was removed/renamed in a channel update.","commonSituations":"Org joined the channel on some peers but config update adding its MSP wasn't committed/propagated everywhere; typo or case mismatch in the MSP ID; client built identity for a different channel/consortium; processing a block from before an MSP removal.","solutions":["Add the missing MSP (with its CA certs) to the channel configuration via a config update and fetch the latest config block on this node","Verify the Mspid string in the identity exactly matches the MSP ID in channel config (case-sensitive, no whitespace)","Ensure the node has the latest channel config (peer channel fetch config / restart gossip sync)","If the identity was created with an old/renamed MSP ID, re-issue credentials under the current MSP ID"],"exampleFix":"// before: identity from Org1MSP used on channel lacking Org1\n// after: configtx.yaml channel definition includes Org1MSP in Organizations,\n// then commit the config update so mgr.mspsMap[\"Org1MSP\"] is populated","handlingStrategy":"validation","validationCode":"sId := &msp.SerializedIdentity{}\nif err := proto.Unmarshal(serializedID, sId) == nil {\n\tif _, ok := channelConfig.MSPs()[sId.Mspid]; !ok {\n\t\treturn fmt.Errorf(\"MSP %q is not defined on this channel; add it to channel config first\", sId.Mspid)\n\t}\n}","typeGuard":null,"tryCatchPattern":"id, err := mgr.DeserializeIdentity(serializedID)\nif err != nil && strings.Contains(err.Error(), \"is not defined on channel\") {\n\t// initiate a channel config update to add the missing MSP\n}","preventionTips":["Keep channel MSP configuration in sync across all orgs before exchanging identities","Use exact, case-correct MSP IDs from configtx.yaml everywhere","Fetch the latest channel config after every config update before validating identities","Verify org MSP presence on every channel the org participates in"],"tags":["msp","channel-config","identity"],"backgroundTag":"msp-not-defined-on-channel","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"}