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+---
+title: AGR-1.01 - Conformity Assessment Criteria (CAC)
+sidebar_position: 3
+---
+
+# AGR-1.01 - Conformity Assessment Criteria (CAC) Guidelines
+
+| Status | Created     | Post-History                    |
+|--------|-------------|---------------------------------|
+| Active | 20-Jan-2025 | Initial creation                |
+
+## Why
+
+Conformity Assessment Criteria (CAC) are essential for ensuring that participants and solutions in the Catena-X ecosystem meet the required standards and specifications. Properly defined and filled CACs ensure:
+
+- **Consistency**: All participants are evaluated against the same criteria
+- **Transparency**: Clear understanding of requirements for certification
+- **Quality**: High standards across the ecosystem
+- **Trust**: Confidence in certified solutions and participants
+
+Without standardized CAC guidelines, the certification process would be inconsistent, leading to:
+- Confusion among participants about requirements
+- Inconsistent quality across certified solutions
+- Potential security and compliance issues
+- Reduced trust in the ecosystem
+
+## Description
+
+This guardrail defines how Conformity Assessment Criteria **must** be structured, documented, and maintained to ensure consistent and effective conformity assessment across the Catena-X ecosystem.
+
+### Key Requirements
+
+:::danger MUST
+Every standard that requires conformity assessment **must** include clearly defined CACs that specify:
+- What needs to be tested
+- How it should be tested
+- What constitutes a pass/fail
+- Which tools or methods to use for verification
+:::
+
+:::warning SHOULD
+CACs **should** be:
+- Testable and verifiable
+- Unambiguous and clear
+- Aligned with the standard's normative sections
+- Updatable as standards evolve
+:::
+
+## Scope
+
+### In Scope
+- CAC structure and formatting
+- CAC content requirements
+- CAC documentation and maintenance
+- CAC verification methods
+
+### Out of Scope
+- Specific certification body procedures
+- Pricing and commercial aspects of certification
+- Legal liability and contracts
+
+## Implementation Guidelines
+
+### Step 1: Identify Conformity Requirements
+
+Review the standard and identify all normative requirements that need verification:
+
+- API endpoints and their behavior
+- Data model compliance
+- Security requirements
+- Performance criteria
+- Interoperability requirements
+
+### Step 2: Define Test Criteria
+
+For each requirement, define specific, measurable test criteria:
+
+```markdown
+## CAC: [Requirement Name]
+
+### Criterion ID: CAC-[Standard]-[Number]
+
+**Requirement**: [Reference to normative section]
+
+**Test Description**: [How to test this requirement]
+
+**Pass Criteria**: 
+- [Specific condition 1]
+- [Specific condition 2]
+
+**Fail Criteria**:
+- [Specific condition that indicates failure]
+
+**Verification Method**: [Manual/Automated/Tool-based]
+
+**Tools Required**: [List of tools if applicable]
+```
+
+### Step 3: Document Evidence Requirements
+
+Specify what evidence must be provided for each CAC:
+
+- Screenshots
+- Log files
+- API responses
+- Test results
+- Configuration files
+
+### Step 4: Link to Standard Sections
+
+Each CAC **must** reference the specific normative section(s) it verifies:
+
+```markdown
+**Normative Reference**: Section 2.3.1 of CX-XXXX v1.0.0
+```
+
+## Examples
+
+### Example 1: API Endpoint CAC
+
+:::tip Best Practice
+This example shows a well-structured CAC for an API endpoint requirement.
+:::
+
+```markdown
+## CAC: Data Provider API - Health Check Endpoint
+
+### Criterion ID: CAC-0018-001
+
+**Requirement**: Data providers must implement a health check endpoint as 
+specified in Section 3.1.2 of CX-0018 Dataspace Connectivity v3.0.0
+
+**Test Description**: 
+Call the `/health` endpoint and verify it returns a valid response.
+
+**Pass Criteria**: 
+- Endpoint responds with HTTP 200 status code
+- Response body contains JSON with `status` field
+- Status field value is either "UP" or "DOWN"
+- Response time is less than 2 seconds
+
+**Fail Criteria**:
+- Endpoint returns 4xx or 5xx status code
+- Response is not valid JSON
+- Response does not contain required fields
+- Response time exceeds 2 seconds
+
+**Verification Method**: Automated API testing
+
+**Tools Required**: 
+- REST client (e.g., Postman, curl)
+- API testing framework
+
+**Evidence Required**:
+- Screenshot or log showing successful API call
+- Response body with timestamp
+```
+
+**Why this is good**: 
+- Clear, specific pass/fail criteria
+- References the normative section
+- Specifies verification method and tools
+- Defines required evidence
+
+### Example 2: Data Model CAC
+
+:::tip Best Practice
+CAC for semantic model compliance.
+:::
+
+```markdown
+## CAC: Aspect Model Validation
+
+### Criterion ID: CAC-0003-001
+
+**Requirement**: All aspect models must be valid SAMM 2.1.0 models as 
+specified in Section 2.1 of CX-0003 SAMM v1.1.0
+
+**Test Description**: 
+Validate the aspect model file against SAMM 2.1.0 specification using 
+the SAMM CLI validator.
+
+**Pass Criteria**: 
+- SAMM CLI validator reports no errors
+- Model file is valid Turtle RDF syntax
+- All required SAMM elements are present
+- Model follows Catena-X naming conventions
+
+**Fail Criteria**:
+- SAMM CLI validator reports errors
+- Invalid RDF/Turtle syntax
+- Missing required SAMM elements
+
+**Verification Method**: Automated validation using SAMM CLI
+
+**Tools Required**: 
+- SAMM CLI (version 2.1.0 or higher)
+- Turtle syntax validator
+
+**Command**: 
+```bash
+samm aspect validate -i model.ttl
+```
+
+**Evidence Required**:
+- Aspect model file (.ttl)
+- SAMM CLI validation output
+- Screenshot showing successful validation
+```
+
+### Example 3: Anti-Pattern - Vague CAC
+
+:::danger What Not To Do
+This example shows a poorly defined CAC that is too vague.
+:::
+
+```markdown
+## CAC: System Performance
+
+**Requirement**: System must perform well
+
+**Test**: Check if system is fast enough
+
+**Pass**: System works fine
+**Fail**: System is too slow
+```
+
+**Why this is wrong**: 
+- No specific performance metrics
+- No reference to standard section
+- No clear pass/fail criteria
+- No verification method specified
+- "Fast enough" and "fine" are subjective
+- Missing evidence requirements
+
+## Verification
+
+### Checklist for CAC Authors
+
+- [ ] Each CAC has a unique identifier (CAC-[Standard]-[Number])
+- [ ] References specific normative section(s) of the standard
+- [ ] Includes clear, measurable pass criteria
+- [ ] Includes clear, measurable fail criteria
+- [ ] Specifies verification method (manual/automated/tool-based)
+- [ ] Lists required tools and versions
+- [ ] Defines required evidence
+- [ ] Uses unambiguous language
+- [ ] Is testable by a certification body
+- [ ] Aligns with the standard's scope and requirements
+
+### Checklist for CAC Reviewers
+
+- [ ] All normative requirements have corresponding CACs
+- [ ] No CACs test non-normative content
+- [ ] CACs are consistent with each other
+- [ ] CACs can be executed by third parties
+- [ ] Evidence requirements are reasonable
+- [ ] Pass/fail criteria are unambiguous
+
+## References
+
+### Related Guardrails
+- [AGR-4.01](./agr-4-01.md) - Standard Documentation Requirements
+
+### Standards
+- [CX-0003 SAMM Semantic Aspect Meta Model](../standards/CX-0003-SAMMSemanticAspectMetaModel/CX-0003-SAMMSemanticAspectMetaModel.md)
+- [CX-0018 Dataspace Connectivity](../standards/CX-0018-DataspaceConnectivity/CX-0018-DataspaceConnectivity.md)
+
+## FAQ
+
+### Question 1: How many CACs should a standard have?
+
+The number of CACs depends on the complexity of the standard. Each normative requirement that needs verification should have at least one CAC. A simple standard might have 5-10 CACs, while a complex standard could have 50+.
+
+### Question 2: Can CACs be automated?
+
+Yes, automation is encouraged where possible. Automated CACs provide:
+- Faster verification
+- More consistent results
+- Reduced costs
+- Better repeatability
+
+However, some requirements may require manual verification (e.g., documentation quality, architectural decisions).
+
+### Question 3: Who writes the CACs?
+
+CACs are typically written by:
+- Standard authors (during standard creation)
+- Architecture review board members
+- Certification experts
+- Technical working group members
+
+CACs should be reviewed and approved through the standard governance process.
+
+### Question 4: When should CACs be updated?
+
+CACs should be updated when:
+- The standard is revised
+- New verification tools become available
+- Feedback from certification bodies identifies issues
+- Ambiguities or errors are discovered
+
+## Change History
+
+| Version | Date        | Changes                          | Author               |
+|---------|-------------|----------------------------------|----------------------|
+| 1.0     | 20-Jan-2025 | Initial release                  | Architecture Team    |
+
+---
+
+:::note Feedback
+Questions or suggestions about CAC guidelines? Please reach out through the standard contribution channels or the architecture working group.
+:::