hyperledger/fabric · error

Only Endorser Transactions are supported, provided type %d

Error message

Only Endorser Transactions are supported, provided type %d

What it means

extractValidationArtifacts checked the payload's channel header type and it is not HeaderType_ENDORSER_TRANSACTION. VSCC (v1.3) only validates endorser transactions, so any other header type is rejected with the offending numeric type.

Source

Thrown at core/handlers/validation/builtin/v13/validation_logic.go:141

		return nil, err
	}

	// ...and the payload...
	payl, err := protoutil.UnmarshalPayload(env.Payload)
	if err != nil {
		logger.Errorf("VSCC error: GetPayload failed, err %s", err)
		return nil, err
	}

	chdr, err := protoutil.UnmarshalChannelHeader(payl.Header.ChannelHeader)
	if err != nil {
		return nil, err
	}

	// validate the payload type
	if common.HeaderType(chdr.Type) != common.HeaderType_ENDORSER_TRANSACTION {
		logger.Errorf("Only Endorser Transactions are supported, provided type %d", chdr.Type)
		err = fmt.Errorf("Only Endorser Transactions are supported, provided type %d", chdr.Type)
		return nil, err
	}

	// ...and the transaction...
	tx, err := protoutil.UnmarshalTransaction(payl.Data)
	if err != nil {
		logger.Errorf("VSCC error: GetTransaction failed, err %s", err)
		return nil, err
	}

	cap, err := protoutil.UnmarshalChaincodeActionPayload(tx.Actions[actionPosition].Payload)
	if err != nil {
		logger.Errorf("VSCC error: GetChaincodeActionPayload failed, err %s", err)
		return nil, err
	}

	pRespPayload, err := protoutil.UnmarshalProposalResponsePayload(cap.Action.ProposalResponsePayload)
	if err != nil {

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Submit only endorser transactions through this validation path
2. Route config/other transaction types to their own validators

When it happens

Trigger: Thrown at core/handlers/validation/builtin/v13/validation_logic.go:141 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/697eee344e2a4ea8. Report an issue: GitHub.