{"record":{"id":"d1c8d9824012b0c0","repo":"hyperledger/fabric","slug":"expected-msp-id-s-received-s","errorCode":null,"errorMessage":"expected MSP ID %s, received %s","messagePattern":"expected MSP ID (.+?), received (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"msp/mspimpl.go","lineNumber":400,"sourceCode":"\t}\n\n\treturn errors.Errorf(\"The identity does not contain OU [%s], MSP: [%s]\", mspRole, msp.name)\n}\n\n// DeserializeIdentity returns an Identity given the byte-level\n// representation of a SerializedIdentity struct\nfunc (msp *bccspmsp) DeserializeIdentity(serializedID []byte) (Identity, error) {\n\tmspLogger.Debug(\"Obtaining identity\")\n\n\t// We first deserialize to a SerializedIdentity to get the MSP ID\n\tsId := &m.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\tif sId.Mspid != msp.name {\n\t\treturn nil, errors.Errorf(\"expected MSP ID %s, received %s\", msp.name, sId.Mspid)\n\t}\n\n\treturn msp.deserializeIdentityInternal(sId.IdBytes)\n}\n\n// deserializeIdentityInternal returns an identity given its byte-level representation\nfunc (msp *bccspmsp) deserializeIdentityInternal(serializedIdentity []byte) (Identity, error) {\n\t// This MSP will always deserialize certs this way\n\tbl, _ := pem.Decode(serializedIdentity)\n\tif bl == nil {\n\t\treturn nil, errors.New(\"could not decode the PEM structure\")\n\t}\n\tcert, err := x509.ParseCertificate(bl.Bytes)\n\tif err != nil {\n\t\treturn nil, errors.Wrap(err, \"parseCertificate failed\")\n\t}\n\n\t// Now we have the certificate; make sure that its fields","sourceCodeStart":382,"sourceCodeEnd":418,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/msp/mspimpl.go#L382-L418","documentation":"After successfully unmarshaling the SerializedIdentity, DeserializeIdentity compares its Mspid against the local MSP's name. This error means the identity belongs to a different organization/MSP than the one evaluating it, so this MSP cannot validate it. Thrown at msp/mspimpl.go:400.","triggerScenarios":"Calling DeserializeIdentity on a bccspmsp instance whose name differs from sId.Mspid — e.g. evaluating an Org2 identity against Org1's MSP, or an MSP directory whose config.yaml 'Name' was renamed after the certificates were issued.","commonSituations":"MSP ID mismatches between channel config and local MSP directories; typos in FABRIC_CFG_PATH MSP name; identities from another org submitted to a peer/channel policy; rebranding an org (MSP ID change) without reissuing identities.","solutions":["Use the MSP instance whose name matches the identity's Mspid (route by sId.Mspid via the MSP manager/identity provider instead of a fixed MSP).","Fix the MSP config so config.yaml 'Name' matches the organization's MSP ID used when the certificates were issued.","If the org MSP ID changed, reissue/re-enroll identities and update channel configuration (configtx) to the new MSP ID."],"exampleFix":"# before: config.yaml of Org1 dir\nName: Org0MSP\n# after\nName: Org1MSP  # must match Mspid embedded in SerializedIdentity","handlingStrategy":"validation","validationCode":"sId := &m.SerializedIdentity{}\nif err := proto.Unmarshal(blob, sId); err != nil {\n  return err\n}\nif sId.Mspid != expectedMSPID {\n  return fmt.Errorf(\"identity belongs to %q, expected %q\", sId.Mspid, expectedMSPID)\n}","typeGuard":null,"tryCatchPattern":"id, err := msp.DeserializeIdentity(blob)\nif err != nil {\n  if strings.Contains(err.Error(), \"expected MSP ID\") {\n    return routeToCorrectMSP(sId.Mspid, blob) // resolve MSP by Mspid via mspmgr.GetMSP\n  }\n  return err\n}","preventionTips":["Route deserialization through the MSP manager (identity provider) instead of a hardcoded bccspmsp so Mspid selects the right MSP.","Keep MSP directory config.yaml Name identical to the MSP ID in channel/configtx configuration.","Verify identities from other orgs against the channel's MSP set, not a single local MSP."],"tags":["msp","identity","msp-id-mismatch"],"backgroundTag":"msp-id-mismatch","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"}