Getting suppliers to complete the Conflict Minerals Reporting Template (CMRT) is often more difficult than the template itself.

Suppliers may not know why the information is required, may not have visibility into their own upstream supply chain, or may already be receiving similar requests from multiple customers. Non-responses and incomplete CMRTs can then leave gaps in the company's conflict minerals data.

The solution is not simply to send more reminder emails.

A stronger CMRT supplier-engagement process combines supplier segmentation, clear instructions, structured follow-up, validation and escalation.

The RMI recommends using the CMRT for conflict minerals inquiries because a common format makes information exchange across supply-chain tiers easier and reduces administrative burden. RMI also notes that more than 80% of filers reference the CMRT for data collection.

Why Do Suppliers Fail to Respond to CMRT Requests?

Supplier response problems usually come from a combination of operational and supply-chain issues.

Common reasons include:

• The supplier does not understand the request
• The supplier does not know which products are in scope
• The supplier has limited visibility into its own suppliers
• The request is sent to the wrong contact
• The supplier receives multiple customer questionnaires
• The supplier considers the request a low priority
• The supplier cannot complete the CMRT without information from sub-tier suppliers
• The supplier submits an incomplete or outdated template

The problem becomes more difficult as the inquiry moves upstream.

For example, Microchip reported a 100% response rate for certain direct supplier categories but more than 79% for another category where indirect relationships with component manufacturers created additional engagement challenges.

That illustrates an important point: response rate is influenced by supply-chain position, not just supplier willingness.

1. Segment Suppliers Before Sending the CMRT

Do not treat every supplier the same.

Start by identifying which suppliers are relevant to the reporting exercise and segment them according to factors such as:

• Product or component supplied
• Potential 3TG content
• Supplier size
• Supply-chain position
• Previous response history
• Risk level
• Relationship with the company

This allows the compliance team to prioritize suppliers that are most important to the inquiry.

A supplier that consistently provides complete CMRTs should not require the same level of intervention as a supplier that has failed to respond for several reporting cycles.

2. Explain Why the Supplier Is Being Asked

A CMRT request is more likely to receive a response when the supplier understands what is required and why.

The request should clearly explain:

• What the CMRT is
• Why the company is collecting the information
• Which products or materials are relevant
• Which reporting period applies
• Which template version should be used
• When the response is required
• Where the completed CMRT should be submitted

Avoid sending the spreadsheet with a message that simply says:

"Please complete the attached CMRT."

Give the supplier enough context to act without having to contact your compliance team for basic instructions.

3. Use the Standard CMRT

Using the RMI's standard template also reduces unnecessary friction.

RMI specifically recommends conducting conflict minerals inquiries using the CMRT because a common tool facilitates information sharing across supply-chain tiers, improves compatibility between responses and reduces administrative burden.

The latest CMRT, EMRT and AMRT versions with functional changes were released by RMI on April 17, 2026. RMI also released functionally identical versions without RMI branding on August 19, 2026.

Make the applicable template version explicit in your supplier instructions.

4. Make the First Request Easy to Complete

The initial request should give suppliers everything they need.

Include:

Scope + template + instructions + deadline + submission method + contact

If suppliers need to ask several questions before they can start, response time will increase.

For suppliers that are unfamiliar with conflict minerals reporting, provide supporting guidance explaining:

• What 3TG means
• What information is expected
• How to complete the CMRT
• What constitutes a complete response
• Where to obtain the current template

For a detailed explanation of the template itself, see CMRT Reporting Template: What It Is and How Companies Use It.

5. Use a Structured Follow-Up Process

A single reminder is rarely enough for a large supplier population.

A practical campaign can follow a sequence such as:

Initial request

↓

Reminder

↓

Second reminder

↓

Personalized follow-up

↓

Escalation

↓

Final review

The exact timing should reflect your reporting calendar and supplier population.

The important point is to make follow-up systematic rather than dependent on someone remembering which suppliers still owe a response.

Wolfspeed, for example, describes using automated emails, personalized emails and phone calls as part of its supplier campaign, with communications monitored and tracked for transparency and future reporting.

6. Separate Non-Responses From Invalid Responses

A supplier that has not responded is different from a supplier that submitted an incomplete CMRT.

Track them separately.

Non-responsive supplier

No usable response has been received.

Action: Continue outreach and escalate where appropriate.

Incomplete CMRT

The supplier has responded but required information is missing.

Action: Identify the specific validation issue and request correction.

Inconsistent CMRT

The supplier has provided information that conflicts with another part of its submission.

Action: Ask the supplier to clarify the discrepancy.

This distinction makes supplier management much more efficient.

3M, for example, describes validating submitted CMRTs for completeness, accuracy and contradictory responses and using automated communications to identify validation issues and request corrections.

7. Give Suppliers Specific Correction Requests

Avoid sending a generic message such as:

"Your CMRT is incomplete. Please resubmit."

Tell the supplier exactly what needs to change.

For example:

Issue: Smelter information is missing for a declared mineral.

Required action: Review the relevant mineral declaration and provide the applicable smelter/refiner information in the CMRT.

Or:

Issue: The submitted CMRT uses an outdated version.

Required action: Complete the current CMRT and resubmit it.

Specific requests reduce unnecessary back-and-forth.

8. Escalate Non-Responsive Suppliers

If repeated requests do not produce a response, escalation should be built into the process.

Possible escalation levels include:

Compliance contact

→ Supplier account manager

→ Procurement

→ Supplier management

→ Senior supplier contact

The escalation route should depend on the importance of the supplier and the company's supplier-management process.

The objective is not to punish suppliers for failing to respond.

It is to make sure a missing response does not silently become an unresolved compliance gap.

9. Track More Than Response Rate

Response rate is useful, but it should not be your only metric.

Track:

This distinction matters because a 90% response rate does not necessarily mean 90% usable data.

A supplier may technically respond while still providing an incomplete CMRT.

How to Build a Stronger CMRT Supplier Campaign

A repeatable campaign should look like this:

Before the campaign

Identify → Segment → Prepare → Assign

During the campaign

Request → Track → Remind → Support → Validate

For exceptions

Correct → Escalate → Resolve → Document

At close

Measure → Report → Retain evidence

This creates a controlled process instead of a collection of individual email conversations.

What About Sub-Tier Suppliers?

Sub-tier visibility is one of the harder parts of conflict minerals reporting.

A manufacturer may communicate directly with a Tier 1 supplier while the relevant smelter or refiner is several tiers upstream.

That means your Tier 1 supplier may need to obtain information from its own suppliers before it can complete the CMRT.

The response strategy should therefore account for:

• Indirect supplier relationships
• Contract manufacturers
• Component suppliers
• Supplier-to-supplier communication
• Upstream data gaps

Microchip's reporting illustrates this challenge: it described difficulties obtaining responses from certain indirect component suppliers and worked with contract manufacturers to help bridge the information gap.

How to Improve CMRT Response Rates

A higher response rate usually comes from improving the process, not simply increasing the number of reminders.

Focus on five areas:

1. Better targeting

Send requests to the right suppliers and contacts.

2. Better communication

Explain the scope and requirements clearly.

3. Better follow-up

Use a defined campaign rather than ad hoc reminders.

4. Better validation

Identify incomplete or inconsistent CMRTs immediately.

5. Better escalation

Give unresolved suppliers a defined escalation path.

For example, Mettler Toledo reported approximately 60% supplier response to its 2024 CMRT inquiry and described additional follow-up due diligence for responses requiring further assessment.

The practical lesson is that response management needs to continue after the first submission deadline.

CMRT Supplier Response Checklist

Before closing your campaign, confirm:

• All relevant suppliers have been identified
  
• Suppliers have been segmented
  
• Correct CMRT version was distributed
  
• Scope and instructions were clearly communicated
  
• Initial requests were tracked
  
• Reminders were scheduled
  
• Non-responses were escalated
  
• Incomplete CMRTs were identified
  
• Suppliers received specific correction requests
  
• Validated responses were recorded
  
• Outstanding gaps were documented
  
• Final response and completion rates were measured
  
• Supplier communications were retained
  

From Supplier Outreach to Usable Compliance Data

Getting suppliers to respond is only the first step.

The objective is to move from:

Request sent

to

Complete CMRT

to

Validated supplier data

to

Documented supply-chain information

That requires visibility into every supplier, response, correction and escalation.

For companies managing large CMRT campaigns, CMRT compliance software can centralize supplier outreach, automated reminders, response tracking, CMRT validation and compliance evidence in one workflow.