Count the places your restaurant's phone number is published. Your own site, your Google listing, Apple Maps, Yelp, three delivery apps, the chamber of commerce page, two aggregator sites you have never logged into, the menu PDF someone uploaded in 2019, a printed sign in your own window. Forty is a normal answer. Sixty is not unusual for a place that has been open a decade.
Every one of those is a claim about who you are. When they agree, search engines treat them as one business with a lot of corroboration. When the phone number stops matching, the corroboration turns into ambiguity, and ambiguity is the thing that costs you.
Why the phone number carries more weight than the rest
Name and address are relatively stable. You do not move often, and your name changes almost never.
The phone number is the field restaurants actually change, and they change it for reasons that feel small at the time. A new POS came with a bundled line. A marketing agency added a tracking number. Someone set up a second line for catering and started handing it out. A voice provider issued a number for testing and it got put on a flyer.
So the phone number is the field most likely to be inconsistent, and it happens to be the field a customer uses. A mismatched address on a stale directory page is an annoyance. A number that reaches a disconnected line is a lost order and a customer who assumes you closed.
What forwarding actually does, and does not do
Forwarding gets blamed for problems it does not cause. If your published number is the same number it has always been, and calls to it now forward somewhere else, nothing about your listings changed. Search engines see a published number. They do not trace where it lands.
The real damage comes from the pattern that usually accompanies forwarding. A vendor issues you a new number, you put that new number on your website and your Google listing because it has better reporting, and you leave the old number forwarding "for now." Now two numbers are in circulation for one restaurant. Half your citations say one thing, half say the other, and the aggregators that copy from each other propagate both.
Then a year later someone cancels the old line to save forty dollars a month, and every directory still showing the old number now points at a dead end. Nobody notices, because the calls that fail to connect never appear in any report you look at.
The version of this that quietly costs money
There is a second failure mode worth naming, and it has nothing to do with rankings.
A forwarded number often loses the context your phone system needs. Calls arrive at the destination looking like they came from the forwarding service rather than from the customer, which breaks caller ID, breaks matching a caller to a previous order, and sometimes breaks callbacks entirely. If you are running any kind of automated answering, that missing context turns a returning regular into an anonymous first-time caller.
Which is why porting the number is almost always the better move than forwarding it indefinitely. Porting means the number itself lives with the new provider, everything published stays correct, and no listing needs to be touched. The mechanics and the timeline are covered in porting a restaurant phone number.
What actually counts as an inconsistency
Formatting is not the problem, despite what a lot of local SEO advice implies. Search engines resolve "123 Main Street, Suite B" and "123 Main St #B" without difficulty. Chasing punctuation across forty listings is a way to spend a weekend achieving nothing.
Three things genuinely matter. A different phone number. A name that varies in substance, such as "Riverside Kitchen" in one place and "Riverside Kitchen & Bar Downtown" in another. And an address that omits or adds a unit number, since that can put you at a different mail delivery point.
Everything else is noise. If a directory writes your street as Ave instead of Avenue, leave it alone.
The name one deserves a second look, because it is the inconsistency owners create on purpose. Adding your city or your best-selling item to the listing name is an old tactic that still gets recommended, and it now does more harm than good. It conflicts with the name on your sign, your receipts, and your menus, and it puts your listing at risk of being edited back or suspended. Use the name a guest would read off the front window.
The records worth fixing, in order
Start with your Google Business Profile, which carries more weight than everything else combined for a restaurant. Then Apple Business Connect, because every iPhone user asking Siri for directions is reading that record. Then Yelp and Bing Places, which feed a surprising amount of downstream data.
After those, your delivery platform listings, because they are highly visible and frequently carry a number the platform assigned rather than yours.
Then stop. The long tail of directories mostly copies from the majors, and it corrects itself over months as those propagate. Paying for a citation-blast service to create hundreds of thin listings is the opposite of consistency work, and the reasoning is laid out in citations and directories for restaurants.
Multi-location makes this harder in a specific way
If you have four locations, you have four phone numbers, four addresses, and one name. The failure mode is a shared or rotating number across locations, which makes it genuinely impossible for a search engine to attach a call, a review, or a mention to the right store.
Each location needs its own local number, its own listing, and its own page on your site with that number on it. That last part is what most brands skip, and it is why their location pages rank worse than a single-unit competitor down the street. The entity-level version of this problem is covered in entity SEO for a restaurant brand.
The audit that takes twenty minutes
Search your phone number in quotes. Then search your old phone number if you have one. Then search your business name plus your city and read the first two pages, writing down every number you see.
If more than one number comes back, you have a decision to make rather than an audit to finish. Pick the number that will be your number for the next five years, put it everywhere, and keep the other one alive and forwarding until the searches stop returning it. Then, and only then, cancel it.
Do that before you change phone systems, not after. Changing providers is the moment when a second number sneaks into circulation, and the cheapest fix is refusing to let it happen at all.