Tier-N mapping uncovers the deeper layers of your supply chain by identifying sub-tier suppliers beyond your direct relationships. To deliver results that are relevant to your business, we need to know what you source from each supplier. Every mapping request therefore requires HS codes (or commodity descriptions) for each supplier site in your submission. This allows us to filter the mapping to the specific goods you buy, rather than returning all available connections for a given supplier.
New to Tier-N mapping? See our Tier-N overview article for an explanation of what Tier-N is and how to view mapping results on the platform.
Why HS codes matter for your results
HS codes (Harmonized System codes) are standardized numerical codes used worldwide to classify traded goods. Without them, a Tier-N mapping returns every connection for a given supplier, including goods unrelated to what you source from them. With HS codes, we filter results to what is relevant to you: less noise, faster processing, and a clearer picture of your actual supply chain.
How to request a mapping
Step 1: Prepare your data in the Discovery Template
Use the Discovery Template to submit your mapping request. Fill in the following columns for every supplier site you want mapped:
Field | Required | Notes | Example |
Supplier name | Yes |
|
|
Supplier ID (Site) | Yes | The unique site identifier in Prewave. Found in the URL when viewing a site, or in any data export, such as the Risk Analysis export. | 1234567 |
Commodity description | Yes* | One line per supplier site. Separate multiple commodities with a semicolon. | Artificial guts (sausage casings) of hardened protein or of cellulosic materials; Stranded wire, cables, plaited bands and the like, of copper, not electrically insulated |
HS code | Strongly recommended* | 6 digits is ideal. 4 digits is acceptable but produces broader results. 8-digit codes are accepted and truncated to 6. | 391710 |
* You must provide at least one of: HS code or commodity description. HS codes speeds up the process.
⚠️ Important: Only screened suppliers can be mapped. If your list includes unscreened suppliers, those will need to go through screening first.
Step 2: Return the file
Send the filled-out Discovery Template to [email protected]. We will review your file and confirm that all required fields are complete. If you provided commodity descriptions without HS codes, we will also map those to HS codes and send the file back for your confirmation. Once everything is verified, your request is scheduled for mapping.
Step 3: Wait for your mapping results
Turnaround time varies depending on the size of your request and the volume of data involved. Larger supplier lists require more processing time. We will keep you informed of progress and notify you as soon as your mapping results are available for review.
If you have questions about a specific request or need help preparing your file, contact our support via Wavie or [email protected].