By Deepa ShettyPublished: 2 min read

Table of Contents

To complete a CMRT, define your reporting scope, identify the suppliers and products in scope, send the appropriate CMRT, review supplier responses, validate smelter and refiner information, resolve data gaps, and consolidate the validated results.

What information do you need to complete a CMRT?

Before requesting CMRTs from suppliers, establish the information you need to collect.

Depending on your reporting scope, this can include:

  • Company and supplier information
  • Products or components in scope
  • 3TG use
  • Supplier declarations
  • Countries of origin
  • Smelter and refiner information
  • Supply-chain due diligence information
  • Supporting documentation

The first step is therefore to determine which suppliers and products are relevant to the reporting exercise.

For broader information about CMRT, 3TG and the regulatory context, see our Conflict Minerals and CMRT guide.

How to Complete a CMRT

1. Define your reporting scope

Start by determining what your CMRT reporting exercise covers.

Identify:

  • Business units or entities in scope
  • Products and components in scope
  • Relevant suppliers
  • Reporting period
  • Minerals being assessed
  • Whether information is required at company or product level

This prevents you from sending supplier requests without knowing exactly what information you need.

Company-level vs. product-level CMRT

A company-level CMRT provides information across a defined company or reporting population.

A product-level CMRT requires more detailed mapping between supplier information and individual products or bills of materials.

If customers require product-specific declarations, establish that requirement before starting supplier data collection.

Read more about company-level vs. product-level CMRT reporting.

2. Identify the suppliers that need to respond

Once your scope is defined, identify the suppliers from whom you need CMRT information.

Your supplier list should allow you to track:

  • Supplier name
  • Supplier contact
  • Products or components supplied
  • CMRT request date
  • Response status
  • CMRT version
  • Validation status
  • Outstanding issues
  • Follow-up actions

This is where CMRT management often becomes an operational challenge.

Sending a CMRT request is only the beginning. Compliance teams also need to track responses, send reminders, resolve incomplete submissions and document supplier follow-up.

3. Send the CMRT request

Provide suppliers with clear instructions when requesting a CMRT.

Your request should explain:

  • Why the information is required
  • Which products or materials are in scope
  • Which CMRT version should be used
  • The reporting period
  • The response deadline
  • Where the completed CMRT should be submitted
  • What happens if information is unavailable

A standardized supplier communication process can make it easier to manage large supplier populations.

Instead of relying on individual email threads, track the campaign from:

Request → Reminder → Response → Validation → Correction → Approval

This also makes it easier to identify suppliers that have not responded.

4. Check the CMRT version

Before accepting a supplier submission, confirm that the supplier has used the appropriate CMRT version.

Do not automatically reuse a previous year's CMRT.

Check the current RMI reporting template and make sure suppliers are working from the applicable version for your reporting exercise.

Version control is particularly important when different suppliers return templates from different reporting cycles.

If you need historical context on CMRT versions, keep that information separate from the main completion workflow and link to the relevant CMRT version and update resource.

5. Review the supplier's CMRT for completeness

A submitted CMRT is not necessarily a completed CMRT.

Review the submission for:

  • Missing information
  • Unanswered questions
  • Inconsistent responses
  • Incorrect company information
  • Unclear reporting scope
  • Missing smelter or refiner information
  • Incomplete country-of-origin information
  • Outdated information
  • Inconsistencies between declarations

The objective is to identify problems before the supplier data is incorporated into your consolidated reporting.

What are the common CMRT errors

Some common problems include:

  • Suppliers using an outdated template
  • Suppliers copying previous-year information without updating it
  • Incomplete declarations
  • Incorrect smelter or refiner information
  • Inconsistent responses between sections
  • Unknown facilities requiring further investigation
  • Suppliers failing to provide sufficient supporting information

These issues should be tracked and resolved rather than simply accepted into the final dataset.

6. Validate smelter and refiner information

Smelter and refiner information is one of the most important parts of the CMRT because it provides visibility into the supply chain beyond your direct supplier.

Review supplier-provided facility information against the appropriate RMI reference data.

If a facility cannot be matched, investigate the discrepancy rather than immediately assuming that the supplier response is incorrect.

Possible outcomes include:

  • Facility information can be validated
  • Additional supplier information is required
  • Facility identity needs clarification
  • The facility requires further investigation
  • Supplier information needs to be corrected

For the detailed process, see How to Validate Smelters in CMRT Reporting.

7. Resolve supplier data gaps

If a supplier submits incomplete or inconsistent information, send the response back for clarification or correction.

Typical follow-up issues include:

  • Missing answers
  • Incorrect facility names
  • Unknown smelters or refiners
  • Inconsistent declarations
  • Missing country information
  • Outdated supplier information
  • Insufficient evidence

Maintain a record of the issue, supplier response and final resolution.

This creates a traceable process instead of relying on the final CMRT alone.

8. Consolidate the validated information

After supplier responses have been reviewed and corrected, consolidate the validated information for your reporting process.

Maintain traceability between:

Supplier → Product/component → CMRT → Smelter/refiner → Country information → Validation → Evidence

This becomes especially important when you need to respond to customer requests for product-level information or investigate a specific supply-chain risk.

CMRT Validation Checklist

Before accepting a supplier CMRT, check:

A standardized checklist helps ensure that supplier responses are reviewed consistently rather than accepted simply because a file was submitted.

How to Manage CMRT Reporting at Scale

For organizations managing large supplier populations, the difficult part is often not completing the CMRT template itself.

The operational challenge is managing the process around it:

Supplier identification → outreach → follow-up → response collection → validation → exception management → reporting → evidence

A centralized compliance workflow can help teams manage supplier campaigns, track response rates, validate submissions, monitor smelter and refiner information, manage corrections and maintain audit-ready records.

This is where CMRT compliance software can support the broader reporting workflow.

CMRT vs. EMRT vs. AMRT

CMRT, EMRT and AMRT are different RMI reporting templates designed for different mineral reporting requirements.

If your reporting process involves multiple templates, don't assume that the same supplier workflow applies to all three.

See our detailed CMRT vs. EMRT vs. AMRT comparison.

Topics

Conflict MineralsResponsible Sourcing

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Guidelines for successfully completing a CMRT

What is CMRT and why is it used in supply chain compliance?
The Conflict Minerals Reporting Template (CMRT) is a standardized reporting format used by companies to collect and disclose information about the sourcing of tin, tungsten, tantalum, and gold (3TG) in their products. It helps organizations assess supply-chain risk, meet regulatory obligations, and demonstrate responsible sourcing to regulators, customers, and investors.
Which minerals are covered under the CMRT?
CMRT covers four minerals—tin, tungsten, tantalum, and gold—commonly referred to as 3TG. These minerals are regulated because they are frequently sourced from conflict-affected and high-risk areas where mining revenues may contribute to armed conflict, human rights abuses, or unsafe labor conditions.
Who developed the CMRT and how is it governed?
The CMRT was developed and is maintained by the Responsible Minerals Initiative, an industry-led body that promotes responsible mineral sourcing. RMI updates the template regularly to reflect regulatory changes, smelter lists, and best practices aligned with global due-diligence expectations.
Is CMRT mandatory under conflict minerals regulations?
CMRT is the de-facto reporting tool used to comply with Dodd-Frank Act Section 1502 and the EU Conflict Minerals Regulation. While the laws themselves do not mandate the template by name, regulators, auditors, and customers expect CMRT-based disclosures as evidence of reasonable due diligence.
What information must companies collect to complete a CMRT?
To complete a CMRT, companies must gather supplier declarations, identify smelters and refiners used in the supply chain, document countries of mineral origin, and answer due-diligence questions related to policies, risk management, and sourcing practices. Accurate smelter data and validated supplier responses are critical to defensible reporting.
What are the most common mistakes companies make with CMRT reporting?
Frequent CMRT failures include using outdated template versions, relying on generic supplier declarations, missing indirect or sub-tier suppliers, failing to validate smelter information, and treating CMRT as a one-time annual exercise rather than a continuously maintained compliance process. These gaps often surface during audits or customer reviews.
How does CMRT support ongoing due diligence rather than one-time reporting?
CMRT is intended to be part of a continuous due-diligence system aligned with the OECD Due Diligence Guidance. Companies are expected to update CMRT data as suppliers, smelters, or sourcing conditions change, maintain records for multiple years, and demonstrate how identified risks are tracked and mitigated over time.
What is a CMRT?
The Conflict Minerals Reporting Template is an RMI template used to collect supply-chain information about tin, tantalum, tungsten and gold.
How do I complete a CMRT?
Define your reporting scope, identify relevant suppliers, collect supplier CMRTs, check the template version, validate the responses and smelter/refiner information, resolve data gaps and retain supporting evidence.
What information should suppliers provide?
Depending on the reporting scope, suppliers may need to provide information about 3TG use, countries of origin, smelters and refiners, supply-chain due diligence and related declarations.
Should every supplier CMRT be validated?
Supplier responses should be reviewed for completeness, consistency and relevance before they are incorporated into your reporting process.
What should I do if a supplier does not respond?
Track the outstanding request, follow up according to your supplier engagement process and document the communication and escalation steps taken.
What if a supplier reports an unknown smelter?
Investigate the facility information and request clarification or additional information from the supplier. Do not automatically classify an unmatched facility as non-compliant without further review.