Release: Jupiter (preview)

CX-0131 Circularity Core v1.2.0

ABSTRACT

This standards concludes the Circularity KIT and shall empower stakeholders to transition towards a circular economy by providing frameworks, guidelines and best practices to enhance sustainability credentials, enable data-driven decision-making and foster collaboration and innovation in the automotive industry. Secondary Material Content (SMC), Material Accounting (MA), End-of-Life (EoL) and Dismantling Services, and the CE-Assistant are the four focus topics that form the first version of the Circularity KIT. The offered content and artifacts address important use cases such as sustainable material management, waste minimization and resource efficiency, that contribute to more sustainable and circular automotive value loops. The overarching goals are:

Establish an understanding of requirements along circular value chains and how businesses can profit by implementing sustainable solutions
Offer standards and guidelines for industry stakeholders
Create the basis for data exchange and applications to ensure the provided frameworks are used in the intended way
Explain different circularity topics and provide tools to implement them

1. INTRODUCTION

Within Circular Economy (CE) it is of utmost importance that any of the partners in the supply chain work closely together and share relevant information that they can provide. Due to the loops in the supply chain the role allocation of suppliers and customers is not as clear as in linear economy. Therefore, it is crucial within Circular Economy to understand the processes, conditions, connections, transitions, and temporal aspects of materials, parts, and vehicles. This involves navigating the complexities of End-of-Life (EoL) considerations, CE-Assistant, Material Accounting (MA), and Secondary Material Content (SMC). Efficiently managing resources and strategically addressing end-of-life phases are integral to fostering sustainability in a closed-loop system.

1.1 AUDIENCE & SCOPE

This section is non-normative

List for which roles the standard is relevant:

Data Provider / Consumer
Business Application Provider

The standard is of interest to all members of the automotive supply chain including suppliers, OEMs, dismantlers, recyclers and stakeholders within the recycling industry and the CE.

Additionally, the standards also apply to software providers and core service providers to ensure interoperability and data sovereignty between different core service providers. The scope of this document is to provide guidance about the different standards in the Circularity use case.

1.2 CONTEXT

In order to effectively enhance circularity along the supply chain, standardized approaches to different aspects of circular economy are essential. This covers the usage of SMC, MA, the CE-Assistant as well as the complexities of EoL Services. The standardization provides structured frameworks based on which information can be shared across industries and stakeholders. Therefore, it enhances comparability between companies and, by reducing the chance of misunderstandings, increases data quality.

In the EoL the issuence of a Certificate of Decommissioning (CoDM) by an authorized dismantling company classifies a vehicle and all associated components as EoL. The issuance of the certificate is exclusively handled by a company within Catena-X holding the CX-verifiable credential Dismantler. Therefore, the CoDM consistently marks the end of the initial life cycle phase of an asset, initiating the EoL process. Subsequently, additional certificates provide the opportunity to commence the start of a component's second or n-th life. However, a vehicle with a specific VIN is unequivocally designated as EoL. The End-of-Life-Vehicle (ELV) will be consecutive dismantled.

The CE-Assistant can then be used to support the dismantling company in its decision as to which components of the ELV should be reused, refurbished, remanufactured or recycled. The assistant suggests the most environmental friendly R-strategy for the components. The asset/part/component/material/fluid/etc. must be certified - reuse, repair, remanufacturing, refurbishment, material recycling, waste - in accordance with the decision made by the stakeholder of concern. This certification makes it possible to track the life cycle of the components precisely. It also offers the advantage of being able to keep statistics on what percentage of its components have been allocated to which R-strategy. In the evaluation of the carbon dioxide (CO2) emissions of different components and their subsequent integration into the digital twin (DT), the precise categorization of these component's across different life cycle phases is a central factor.

The utilization of precisely defined EoL certificates enables the accurate determination of a components current life cycle phase. This precision not only ensures a reliable assessment, but also facilitates a comprehensive understanding of the environmental impact and carbon footprint of the components, seamlessly integrating this valuable information into the digital twin framework. The dismantling process is carried out in accordance with all legal requirements (e.g. documentation of pollutant removal, etc.). The vehicle is then dismantled and individual materials are separated.

The separated assets are part of further processing by any R-strategy. The second life of the asset might for example be Reuse, Repair, Remanufacture or Recycle. Depending on the exact R-Strategy, different data might be interesting for the second life of the asset.

MA provides standardized scrap/waste and secondary material data exchange for the ecosystem partners to create transparency about recycling activities and verifiable closed loops.

To close the loops and to understand the usage of the materials provided through the previous steps, SMC explores ways to incorporate secondary materials into the value chain. By facilitating a standardized data model for data exchange and introducing a calculation methodology, this framework establishes a foundation to facilitate communication between stakeholders. Through this, the secondary materials are being brought back into the loop. Those materials are processed into new products and after entering the EoL-phase the loop is closed.

1.3 CONFORMANCE

As well as sections marked as non-normative, all authoring guidelines, diagrams, examples, and notes in this specification are non-normative. Everything else in this specification is normative. The key words MAY, MUST, MUST NOT, OPTIONAL, RECOMMENDED, REQUIRED, SHOULD and SHOULD NOT in this document document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.

1.4 PROOF OF CONFORMITY

All participants and their solutions will need to proof, that they are conform with the Catena-X standards. To validate that the standards are applied correctly, Catena-X employs Conformity Assessment Bodies (CABs). Please refer to the certification information page for the process of conformity assessment and certification. Since this Core document describes a set of standards to be fulfilled, participants MUST fulfill all mentioned standards for the relevant sub-usecase (2.3, 2.4, 2.5) and the respective conformity assessment criteria in addition to the specific criteria mentioned in this document. The specific criteria described in this document are describing the usage of the central tools as well as common tools described in the linked standardization documents and therefore compliance should be checked with the tools provided for these components.

1.5 TERMINOLOGY

This section is non-normative

All usecase relevant terminologies can be found in the circularity kit

Additional terminology used in this standard can be looked up in the glossary on the association homepage.

2. STANDARDS FOR CIRCULARITY CORE

This section is normative

2.1 Overall Standalone Standards

CX-0001:1.0 EDC Discovery API
CX-0002:2.2 Digital Twin in Catena-X
CX-0003:1.1 SAMM Semantic Aspect Meta Model
CX-0006:2.0 Registration And Initial OnBoarding
CX-0013:2.0 Identity of Member Companies
CX-0014:1.0 Employees and Technical Users
CX-0015:1.0 IAM & Access Control Paradigm
CX-0018:3.0 Dataspace Connectivity
CX-0049:2.0 DID Document Schema
CX-0050:2.0 Framework Agreement Credential

2.2 General Requirements

2.2.1 Conventions for Use Case and Core (this document) Policy in context data exchange

In alignment with our commitment to data sovereignty, a specific framework governing the utilization of data within the Catena-X use cases has been outlined. A set of specific policies on data offering and data usage level detail the conditions under which data may be accessed, shared, and used, ensuring compliance with legal standards.

For a comprehensive understanding of the rights, restrictions, and obligations associated with data usage in the Catena-X ecosystem, we refer users to

the detailed ODRL policy repository. This document provides in-depth explanations of the terms and conditions applied to data access and utilization, ensuring that all engagement with our data is conducted responsibly and in accordance with established guidelines.
the ODRL schema template. This defines how policies used for data sharing/usage should get defined. Those schemas MUST be followed when providing services or apps for data sharing/consuming.

2.2.2 Additional Details regarding Access Policies

A Data Provider may tie certain access authorizations ("Access Policies") to its data offers for members of Catena-X and one or several Data Consumers. By limiting access to certain Participants, Data Provider maintains control over its anti-trust obligations when sharing certain data. In particular, Data Provider may apply Access Policies to restrict access to a particular data offer for only one Participant identified by a specific business partner number:

Membership
BPNL

2.2.3 Additional Details regarding Usage Policies

In the context of data usage policies (“Usage Policies”), Participants and related services MUST use the following policy rules:

Use Case Framework (“FrameworkAgreement”)
at least one use case purpose (“UsagePurpose”) from the above mentioned ODRL policy repository.

Additionally, respective usage policies MAY include the following policy rule:

Reference Contract (“ContractReference”).

Details on namespaces and ODLR policy rule values to be used for the above-mentioned types are provided via the ODRL policy repository.

2.2.4 Onboarding and IAM

All participants mentioned under 1.1 MUST follow the CX Standards CX-0006 and CX-0013 to CX-0017.

2.2.5 Fetching EDC Endpoints

To find the EDC Endpoint addresses of related parties in Catena-X, app provider MUST follow the CX-0001 Standard.

2.2.6 Searching for Decentralized Digital Twin Registries

To find decentralized Digital Twin Registries of related parties in Catena-X, app provider MUST follow the CX-0002 Standard.

2.2.7 Registration at the BPN Discovery Service

To find the Business Partner Number of the related parties in Catena-X, data provider (Only relevant for the sub use cases 2.4, 2.5) MUST follow the CX-0053:2.1 standard.

Example can be found in the Digital Twin Kit

2.3 Secondary Material Content

2.3.1 LIST OF STANDALONE STANDARDS SMC

To participate in the Secondary Material Content sub-use case, the following single standards MUST be fulfilled by all participants mentioned under 1.1, if data is provided:

Aspect Model SecondaryMaterialContent v1.0

2.3.2 DATA REQUIRED

If data is provide, Data Provider MUST provide a PartAsPlanned or a PartAsBuilt together with the aspect for SecondaryMaterialContent.

2.3.3 ADDITIONAL REQUIREMENTS

2.3.3.1 Registration of the Digital Twin and the SMC Submodel in the Digital Twin Registry

Specific asset IDs MUST be provided when registering a digital twin:

For AsPlanned: ManufacturerPartID & "assetLifecyclePhase=AsPlanned"
For AsBuilt: PartInstanceID & "assetLifecyclePhase=AsBuilt"

See the following example:

    "specificAssetIds": [
        {
            "key": "manufacturerPartId",
            "value": "{{manufacturerPartId}}",
        }, 
        {
            "key" : "assetLifecyclePhase",
            "value": "AsPlanned"
        }
    ]

The data provider also MUST provide an API Endpoint following the CX-0002.
Data provider MUST register the related SMC sub-model as shown in the example below.
The subprotocolBody definition MUST follow CX-0002
The id added to the subprotocolBody SHOULD be a UUIDv4
The href definition follows CX-0002.

2.3.3.2 EDC Asset Structure

The asset structure MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.3.3.3 EDC Contract Definition

The contract definition MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.4 EoL Services

2.4.1 LIST OF STANDALONE STANDARDS EoL Services

To participate in the EoL Services use-case, the following single standards are RECOMMENDED to be fulfilled by all participants for which the standard is relevant:

CX-0127:2.0 Industry Core: Part Instance with the Aspect Model "SerialPart"
CX-0127:2.0 Industry Core: Part Instance with the Aspect Model "SingleLevelBoMAsBuilt"
CX-0126:2.0 Industry Core: Part Type with the Aspect Model "SingleLevelBomAsPlanned"
Aspect Model SingleLevelBoMAsSpecified
Aspect Model MaterialForHomologation
Aspect Model PartAsSpecified
Aspect Model QualityTask
Aspect Model VehicleProductDescription
Aspect Model FleetDiagnosticData
Aspect Model FleetClaimData
Aspect Model PartAnalyses
Aspect Model ManufacturedPartsQualityInformation
Aspect Model FleetVehicles
Aspect Model QualityTaskAttachment

Participants in the use case MUST follow Catena-X aligned data models.

2.4.2 ADDITIONAL REQUIREMENTS

The CX-verifiable credential “Dismantler” MUST be held by the issuing business partner in order to be able to issue the Aspect Model Certificate of Decommissioning v1.0 certificate.

The business partners implementing the respective R-strategy (Reuse, Repair, Remanufacturing, Refurbishment, Material Recycling) or adding waste to the waste stream SHOULD issue the corresponding certificate.

Differentiation between reuse, remanufacturing and refurbishment of parts and components

For the reuse of a component or part, the following requirements MUST be met in accordance with the Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on circularity requirements for vehicle design and on management of end-of-life vehicles, amending Regulations (EU) 2018/858 and 2019/1020 and repealing Directives 2000/53/EC and 2005/64/EC, Annex Part D:.

For the remanufacturing or refurbishment of a component or part, the following requirements MUST be met in accordance with the Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on circularity requirements for vehicle design and on management of end-of-life vehicles, amending Regulations (EU) 2018/858 and 2019/1020 and repealing Directives 2000/53/EC and 2005/64/EC, Annex Part D:.

Application Provider for EoL Services MUST be able to handle the following certificates:

Aspect Model Certificate of Decommissioning
Aspect Model Reuse Certificate
Aspect Model Waste Certificate
Aspect Model Refurbishing Certificate
Aspect Model Remanufacturing Certificate
Aspect Model Material Recycling Certificate
Aspect Model Repair Certificate

2.4.2.1 Registration of the Digital Twin and the Submodel in the Digital Twin Registry

Digital twins MUST be registered by a data provider participating in the sub use case EoL Services, if data is available, for Vehicles and every part that is subject to R-Strategies.

A data provider MUST register their AAS of the respective certificate as following:

Certificate of Decommissioning: CoDM_{{PartinstanceId}}
Reuse Certificate: reuseCrt_{{PartInstanceId}}
Repair Certificate: repairCrt_{{PartInstanceId}}
Remanufacturing Certificate: remanCrt_{{PartInstanceId}}
Refurbishing Certificate: refurbCrt_{{PartInstanceId}}
Material Recycling Certificate: matrecCrt_{{PartInstanceId}}
Waste Certificate: wasteCrt_{{PartInstanceId}}

By issuing the CoDM, all Parts of the vehicle MUST be registered as CoDM_{{PartinstanceId}}. When issuing one of the following certificates Reuse, Remanufacturing, Refurbishing, Material Recycling or Waste, the respective issued certificate MUST be added to the respective AAS.

A Data Provider MUST add the specific BPN-L as externalSubjectId to grant access to the specificAssetId partInstanceId

Additionally, depending on the lifecycle, the following asset IDs MUST be provided:

For AsPlanned: ManufacturerPartID & "assetLifecyclePhase=AsPlanned"
For AsBuilt: PartInstanceID & "assetLifecyclePhase=AsBuilt"
For the CustomerPartID" a external externalSubjectId a BPN MUST be set.
A data provider also MUST provide a API Endpoint following the CX-0002.
A Data provider MUST register the related certificate sub-models.
The subprotocolBody definition MUST follow CX-0002
The id added to the subprotocolBody SHOULD be a UUIDv4
The href definition follows CX-0002.

2.4.2.2 EDC Asset Structure for EoL Services

The asset structure MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.4.2.3 EDC Contract Definition for EoL Services

The contract definition MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.4.2.4 EDC Policy Structure for EoL Services

For the sub use case EoL Services the condition mentioned under 2.6 MUST be fulfilled. In addition the application MUST verify the presence of the dismantler credential (see CX-0131) before attaching the certificate to the twin. Prior to issuing a certificate, it is necessary to check whether a certificate has already been issued for this asset. If this is the case, it should be indicated to the issuing party.

Example:

{
  "constraint": {
    "leftOperand": "Dismantler.activityType",
    "operator": "eq",
    "rightOperand": "vehicleDismantle"
  }
}

2.5 CE-Assistant

2.5.1 LIST OF STANDALONE STANDARDS

To participate in the CE-Assistant use-case, the following single standards are RECOMMENDED to be fulfilled by all participants for which the standard is relevant:

CX-0127:2.0 Industry Core: Part Instance with the Aspect Model "SingleLevelBoMAsBuilt"
CX-0127:2.0 Industry Core: Part Instance with the Aspect Model "Batch"
CX-0126:2.0 Industry Core: Part Type with the Aspect Model "PartType"
CX-0136:1.0 Use Case PCF

To participate in the CE-Assistant use-case, compliance to the following data models is RECOMMENDED by all participants for which the standard is relevant:

Aspect Model SingleLevelBoMAsSpecified
Aspect Model MaterialForHomologation
Aspect Model PartAsSpecified
Aspect Model ReturnRequest
Aspect Model BatteryPass
Aspect Model Marketplaceoffer
Aspect Model VehicleProductDescription
Aspect Model PartAnalyses
Aspect Model ManufacturedPartsQualityInformation
Aspect Model RemainingUsefulLife
Aspect Model QualityTaskAttachment

To participate in the CE-Assistant use-case, compliance to the following data models / certificates is RECOMMENDED by all participants for which the standard is relevant:

Aspect Model Reuse Certificate
Aspect Model Refurbishing Certificate
Aspect Model Remanufacturing Certificate
Aspect Model Repair Certificate

2.5.2 DATA REQUIRED for CE Assistant

Currenty there are no data models that are mandatory to be used.

2.5.3 ADDITIONAL REQUIREMENTS

2.5.3.1 Registration of the Digital Twin and the Submodel in the Digital Twin Registry

Digital Twins MUST be registered in the decentralized digital twin registry. For looking up the twin ID for vehicles, the data provider MUST register the twins with the specificAssetIds: VIN and assetLifecyclePhase= AsBuild.

"specificAssetIds": [
    {
        "key": "VIN",
        "value": "{{VIN}}",
    }, 
    {
        "key" : "assetLifecyclePhase",
        "value": "AsBuild",
    }   
 ]

Digital Twins MUST be registered in the decentralized digital twin registry. For looking up the twin ID for components, the data provider MUST register the twins with the specificAssetIds: manufacturerPartID and assetLifecyclePhase= AsPlanned.

For components:

"specificAssetIds": [
    {
        "key": "manufacturerPartId",
        "value": "{{manufacturerPartId}}",
    }, 
    {
        "key" : "assetLifecyclePhase",
        "value": "AsPlanned", 
    }
 ]

The data provider also MUST provide a API Endpoint following the CX-0002.
Data provider MUST register the related C sub-model as shown in the example below.
The subprotocolBody definition MUST follow CX-0002
The id added to the subprotocolBody SHOULD be a UUIDv4
The href definition follows CX-0002.

The data provider also MUST provide an API Endpoint following CX-0002.

2.5.3.2 EDC Asset Structure for CE Assistant

The asset structure MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.5.3.3 EDC Contract Definition for CE Assistant

The contract definition MUST follow the CX-Standard 0018. For examples we recommend to use the official connector kit

2.5.3.4 Components and parts not to be reused

The following components and parts MUST NOT be reused in accordance with the Proposal for a REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on circularity requirements for vehicle design and on management of end-of-life vehicles, amending Regulations (EU) 2018/858 and 2019/1020 and repealing Directives 2000/53/EC and 2005/64/EC, Annex Part E:.

For the selection of an R-Strategy of a component consider the differentiation in 2.4.2 Additional requirements

2.6 EDC Policy Structure

The policies mentioned in this chapter MUST be fulfilled by each use case mentioned in this document as well as a participant mentioned under 1.1 MUST agree to the overall Catena-X Terms and Condition as well as the general FrameworkAgreement DataExchangeGovernance:1.0. This follows the first SSI setup following the IAM Standards in CX covering the new SSI infrastructure which will released with release 3.2.

The minimum set of membership and the Data Exchange Governance Framework Agreement

{
    "@context": {
        "odrl": "http://www.w3.org/ns/odrl/2/"
    },
    "@type": "PolicyDefinitionRequestDto",
    "@id": "{{POLICY_ID}}",
    "policy": {
        "@type": "Policy",
        "odrl:permission": [
            {
                "odrl:action": "USE",
                "odrl:constraint": {
                    "@type": "LogicalConstraint",
                    "odrl:and": [
                        {
                            "@type": "Constraint",
                            "odrl:leftOperand": "Membership",
                            "odrl:operator": {
                                "@id": "odrl:eq"
                            },
                            "odrl:rightOperand": "active"
                        },
                        {
                            "@type": "Constraint",
                            "odrl:leftOperand": "FrameworkAgreement.sustainability",
                            "odrl:operator": {
                                "@id": "odrl:eq"
                            },
                            "odrl:rightOperand": "active"
                        }
                    ]
                }
            }
        ]
    }
}

For more examples have a look here.

3 ASPECT MODELS

This section is normative

3.1 ASPECT MODEL "SingleLevelBoMAsSpecified"

The SingleLevelBoMAsSpecified defines the view of the OEM or producer of the whole product, e.g. the OEM of a vehicle. It is free of any supplier-related information and specifies the promised and guaranteed content of the whole product to the end customer. This “top-down” view contrasts with the “bottom-up” view of the SingleLevelBoMAsPlanned, though several sub-aspects are shared. The SingleLevelBoMAsSpecified is merely one aspect, which is attached to the twin of the whole product and itself does neither introduce further twins nor reference them. Instead, it merely comprises all functional information required by dismantlers, workshops, or requestors for used parts to search for and to make a match on the marketplace.