hyperledger/fabric · error

error converting config to map: %s

Error message

error converting config to map: %s

What it means

Wrapped mapConfig failure in NewValidatorImpl: the config's channel group could not be flattened into the key/path map used for validation, usually due to malformed group structure or invalid keys in the tree.

Source

Thrown at common/configtx/validator.go:117

}

// NewValidatorImpl constructs a new implementation of the Validator interface.
func NewValidatorImpl(channelID string, config *cb.Config, namespace string, pm policies.Manager) (*ValidatorImpl, error) {
	if config == nil {
		return nil, errors.Errorf("nil config parameter")
	}

	if config.ChannelGroup == nil {
		return nil, errors.Errorf("nil channel group")
	}

	if err := ValidateChannelID(channelID); err != nil {
		return nil, errors.Errorf("bad channel ID: %s", err)
	}

	configMap, err := mapConfig(config.ChannelGroup, namespace)
	if err != nil {
		return nil, errors.Errorf("error converting config to map: %s", err)
	}

	return &ValidatorImpl{
		namespace:   namespace,
		pm:          pm,
		sequence:    config.Sequence,
		configMap:   configMap,
		channelID:   channelID,
		configProto: config,
	}, nil
}

// ProposeConfigUpdate takes in an Envelope of type CONFIG_UPDATE and produces a
// ConfigEnvelope to be used as the Envelope Payload Data of a CONFIG message
func (vi *ValidatorImpl) ProposeConfigUpdate(configtx *cb.Envelope) (*cb.ConfigEnvelope, error) {
	return vi.proposeConfigUpdate(configtx)
}

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Inspect the wrapped error for the offending group/key
2. Rebuild the config tree from a known-good source

When it happens

Trigger: Thrown at common/configtx/validator.go:117 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/9c6acce843d16b69. Report an issue: GitHub.