{"record":{"id":"b916f948f654a0f4","repo":"hyperledger/fabric","slug":"could-not-serialize-the-signing-identity-s","errorCode":null,"errorMessage":"Could not serialize the signing identity: %s","messagePattern":"Could not serialize the signing identity: (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"core/common/ccpackage/ccpackage.go","lineNumber":182,"sourceCode":"\t}\n\n\tif instPolicy == nil {\n\t\treturn nil, errors.New(\"must provide an instantiation policy\")\n\t}\n\n\tcdsbytes := protoutil.MarshalOrPanic(cds)\n\n\tinstpolicybytes := protoutil.MarshalOrPanic(instPolicy)\n\n\tvar endorsements []*peer.Endorsement\n\t// it is not mandatory (at this protoutil level) to have a signature\n\t// this is especially convenient during dev/test\n\t// it may be necessary to enforce it via a policy at a higher level\n\tif owner != nil {\n\t\t// serialize the signing identity\n\t\tendorser, err := owner.Serialize()\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"Could not serialize the signing identity: %s\", err)\n\t\t}\n\n\t\t// sign the concatenation of cds, instpolicy and the serialized endorser identity with this endorser's key\n\t\tsignature, err := owner.Sign(append(cdsbytes, append(instpolicybytes, endorser...)...))\n\t\tif err != nil {\n\t\t\treturn nil, fmt.Errorf(\"Could not sign the ccpackage, err %s\", err)\n\t\t}\n\n\t\t// each owner starts off the endorsements with one element. All such endorsed\n\t\t// packages will be collected in a final package by CreateSignedCCDepSpecForInstall\n\t\t// when endorsements will have all the entries\n\t\tendorsements = make([]*peer.Endorsement, 1)\n\n\t\tendorsements[0] = &peer.Endorsement{Signature: signature, Endorser: endorser}\n\t}\n\n\treturn createSignedCCDepSpec(cdsbytes, instpolicybytes, endorsements)\n}","sourceCodeStart":164,"sourceCodeEnd":200,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/core/common/ccpackage/ccpackage.go#L164-L200","documentation":"When an owner (endorser) is supplied, OwnerCreateSignedCCDepSpec calls owner.Serialize() to embed the signing identity in the endorsement. If Serialize fails — typically because the identity's underlying MSP credentials are missing, malformed, or expired — the error is wrapped with the underlying cause.","triggerScenarios":"Passing a SignerSerializer whose MSP identity cannot be serialized: uninitialized local MSP, missing signer cert/key, corrupted mspConfigPath, or a custom SignerSerializer implementation returning an error from Serialize.","commonSituations":"peer not enrolled (no cryptogen/Fabric CA material in MSPDIR); FABRIC_CFG_PATH pointing to a config without the right msp section; stale certificates after org crypto material regeneration; identity types not supported by the configured MSP provider.","solutions":["Verify the local MSP is properly initialized (peer/node start, or mspmgmt.GetLocalMSP) and that signer cert/key files exist under msp/signcerts and msp/keystore","Regenerate or re-import crypto material (cryptogen generate / Fabric CA enroll) so the identity is valid","Check the wrapped %s cause in the message — it names the specific MSP/serialization failure and fixes that underlying error","Ensure FABRIC_CFG_PATH/CORE_PEER_LOCALMSPID/CORE_PEER_MSPCONFIGPATH point to the correct MSP directory"],"exampleFix":"// before\nsigner, err := mspmgmt.GetLocalMSP().GetDefaultSigner() // may return unusable signer if MSP unconfigured\nenv, _ := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, signer)\n// after\nsigner, err := mspmgmt.GetLocalMSP().GetDefaultSigner()\nif err != nil { return fmt.Errorf(\"no local signer: %w\", err) }\nif _, err := signer.Serialize(); err != nil { return fmt.Errorf(\"identity not serializable, check MSP config: %w\", err) }\nenv, err := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, signer)","handlingStrategy":"validation","validationCode":"if owner != nil {\n    if _, err := owner.Serialize(); err != nil {\n        return fmt.Errorf(\"signing identity unusable, check MSP config: %w\", err)\n    }\n}","typeGuard":"func canSerialize(s identity.SignerSerializer) bool {\n    if s == nil { return false }\n    _, err := s.Serialize()\n    return err == nil\n}","tryCatchPattern":"env, err := ccpackage.OwnerCreateSignedCCDepSpec(cds, policy, owner)\nif err != nil {\n    if strings.HasPrefix(err.Error(), \"Could not serialize the signing identity\") {\n        return fmt.Errorf(\"fix local MSP (FABRIC_CFG_PATH / mspconfig): %w\", err)\n    }\n    return err\n}","preventionTips":["Verify local MSP initialization at process startup","Keep FABRIC_CFG_PATH and msp config paths consistent per environment","Pre-flight Serialize() check before any signing workflow"],"tags":["hyperledger-fabric","msp","identity","serialization","crypto-material"],"backgroundTag":"identity-serialization-failed","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"}