Lead Source Naming Conventions That Keep Attribution Clean

The used-car manager asks which channel is producing appointments. The CRM says Facebook is up, Marketplace is down, Social is flat, and Internet is the biggest bar on the chart. Those are not four channels. They are four ways of spelling the same confusion. Nobody can kill a bad spend, coach a weak channel, or defend a good one when the names are a junk drawer.

Attribution does not start in a monthly advertising meeting. It starts at the moment someone picks a source on a new lead. Lead source naming conventions that keep attribution clean are a controlled vocabulary plus the discipline to use it. Without both, every ROI conversation is theater.

This guide is for general managers, internet directors and BDC leads. It gives a taxonomy you can copy and tighten, rules for Marketplace versus website versus phone-in, and an audit that treats unlabeled sources as defects. It does not invent conversion rates or claim that any tool will attribute a sale perfectly. People still lie, share listings, and walk in after texting a cousin.

Why Source Names Rot in Used-Car CRMs

OEM-fed new-car departments often inherit a source list. Used departments and independents grow theirs by accident.

How entropy happens

• Free-text fields. One agent types "FB MP," another picks "Facebook."
• Reps tagging walk-ins as "Internet" because the buyer "saw us online."
• Managers adding a new source every time a vendor changes a product name.
• Old sources never retired, so the picklist is eighty items and nobody scrolls.

The result is a report that cannot be summed. You cannot add Facebook + FB + Marketplace without a mapping table, and nobody maintains the mapping table.

Attribution you can defend vs. attribution you want

Clean naming tells you where the inquiry arrived. It does not always tell you why they bought. A buyer can message Marketplace, then submit a website form, then walk in. Pick a rule for multi-touch (first source wins, last source wins, or a documented split) and write it down. Changing the rule every month to make a vendor look better is how you lose the room.

If you later try to compute channel ROI, start from this vocabulary. The mechanics of cost and close are in tracking Marketplace lead source ROI in your CRM. Bad names make that article impossible to use.

A Locked Taxonomy for Dealership Internet Leads

Keep the list short. Channel first, then a modifier only when it changes the work.

Recommended parent sources (illustrative)

Use names that describe where the inquiry landed, not how you feel about it:

• Marketplace — Facebook Marketplace listing inquiry (Messenger or Marketplace UI).
• Website — dealer site form or chat.
• Phone-listing — inbound call that referenced a specific online listing.
• Facebook-group — inquiry from a group post, not Marketplace.
• Facebook-profile — inquiry on a profile post of a vehicle.
• Third-party — other listing sites you actually use; split by site only if volume justifies it.
• Walk-in-online — physically arrived, states they saw an online listing, no prior thread.
• Repeat-customer — existing customer, even if they found a listing.
• Referral — named person, not "a guy."
• Unknown — allowed, counted as a defect, never used as a junk drawer for laziness.

Do not add Internet, Social, Online, Other, or Facebook as parents. They overlap everything.

Modifiers only when they change handling

A modifier is justified if it changes who answers or how you staff:

• After-hours vs store-hours (if you report them separately).
• Which lot, on a multi-roof group.
• Which Marketplace account or profile received it, if you post from more than one.

A modifier is not justified because a vendor wants their product name in your CRM. Keep vendor names in a campaign or notes field if you must, not as a dozen parent sources.

Formatting rules

• One official spelling. No aliases.
• No punctuation variants (Market-place vs Marketplace).
• Hide or lock free text.
• Retire names; do not delete history. Map old → new once, in writing.

Publish the list on the BDC wall and in the used-car meeting notes. If it only lives in the CRM admin screen, it will be ignored.

Channel Rules That Keep Marketplace From Eating Website (and Vice Versa)

Used lots mix channels in the same hour. Write collision rules.

If they message Marketplace, then submit a website form

Do not create a second customer with a second source if you can match phone or email. Keep the original source unless your written multi-touch rule says last-touch. Add a note: "also submitted website form, timestamp." Duplicate sources on duplicate records is how Marketplace and website both claim the same appointment.

Marketplace versus website behavior is different enough that handling should differ even when naming is clean; see Facebook Marketplace leads vs dealer website leads.

If they call after seeing a listing

Phone-listing is not Marketplace and not Website unless you verified which page they were on. Ask "which vehicle" and log stock/VIN. If they cannot name it, Unknown plus the vehicle they discussed is more honest than guessing Marketplace to make a posting program look busy.

If a floor rep posts from a personal profile

The source is Facebook-profile (or a locked equivalent), not Marketplace, unless the inquiry actually came from Marketplace. Mixing those two hides the risk of personal-profile posting and inflates Marketplace in the report. Policy for that channel belongs in a separate document; naming is how you even see the volume.

Walk-ins who "saw it online"

Walk-in-online is allowed. Forcing them into Marketplace without a thread is how you invent ROI. If they can show the listing on their phone, note the VIN. Still do not relabel a true walk-up as a digital lead to hit a KPI.

The Audit That Makes Naming Conventions Stick

A list nobody audits is decoration.

Weekly defect sample

Twenty new internet leads:

1. Source is on the locked list: yes/no.
2. Source matches the actual channel of first contact: yes/no.
3. Duplicate record with a different source: yes/no.
4. Vehicle of interest present: yes/no.

Two or more defects: incomplete. Incomplete does not count as a sourced lead in any advertising story.

Monthly roll-up a GM can trust

• Volume by parent source only. No eighty-row dump.
• Share of Unknown. Treat it like aged inventory: a number that should fall.
• Collision count: same phone, two sources, two records.
• One-page map of retired names, if you migrated.

Pair this with the rest of CRM hygiene. Source is one field. Dirty phones and sold VINs will still wreck the story.

Who is allowed to add a source

One admin. Requests go through the internet director. "We need a new source for this weekend's boost" is usually a campaign note, not a parent source. If you add names casually, you are back to entropy in a quarter.

How PostToMarket Automates This

Clean attribution needs two things a CRM cannot see by itself: which listing was live, and which Marketplace conversations actually happened. PostToMarket does not replace your source picklist and does not integrate with your CRM. It gives managers a source-aware view of posting and inquiries so the names you chose in the CRM have something real to attach to.

Source-aware posting work

• Team analytics by rep and source so posting activity is not an unlabeled pile.
• Roles and per-rep queues so you know who posted the unit the buyer later messages.
• Chrome extension posting to Marketplace, and also to the user's Facebook profile and Facebook groups, one vehicle at a time. Those are different channels in your taxonomy; do not collapse them into "Facebook."

Inquiries that can inherit a real channel

• Leads inbox for managers, which is how Marketplace stops living only on personal phones where the source is "whatever the rep remembers."
• Inventory statuses and mark as sold, so you are not attributing conversations to units that are already gone.
• AI titles and descriptions from specs, so the listing the buyer names can be matched to a VIN and then to a source.

PostToMarket is independent and not affiliated with Meta. No tool can guarantee Facebook will report origin the way your CRM wants. A locked naming convention plus visible posting and leads activity is how you stop guessing.

Lock the Names, Then Defend Every Report With Them

Lead source naming conventions that keep attribution clean are a short parent list, collision rules for multi-touch, and a weekly defect sample. Kill Internet and Social. Count Unknown as a problem. Stop letting duplicate records tell two origin stories for one buyer.

PostToMarket keeps Marketplace posting and inquiries visible enough that those names mean something. Starter is $59 per month for a solo seller with one login. Dealership is $299 per month for up to 13 team logins.

Start your 10-day free trial using secure Stripe checkout. Post from real inventory, review leads in one inbox, and give your source report a chance to be true. Cancel anytime.