C31: Goods/Services Not as Described

C31 means the standards American Express applies, the documentation that can make or break a rebuttal, and the patterns that tend to trigger these disputes. Whether you’re handling your first C31 chargeback or looking to tighten up your prevention strategy, what follows will give you a helpful picture of how this reason code works and what you can do about it.

What C31 Actually Means Under American Express Rules

American Express organizes its chargeback reason codes into five large categories, and C31 sits within the one called Card Member Disputes - this category covers situations where a transaction did happen - the card was charged, the merchant fulfilled something - but the card member has a problem with what they received.

The C31 code applies when goods or services don’t match what was described at the point of sale. That description could come from a product listing, a menu, a contract, a sales call, or a screenshot of a website. If what the customer received doesn’t line up with that, C31 is the relevant code.

In practical terms, this covers a variety of situations. A customer orders a blue jacket in size medium and receives a red one in size large. A piece of furniture arrives damaged. A contractor completes work that doesn’t align with what the quote described. These are the simpler cases.

The grey areas are more interesting. Digital products - like software, downloads, or access to a platform - can be legitimately hard to evaluate, because the “description” could be vague or interpreted differently by each side. Subscription services add another layer, and that’s also the case when a card member argues that the features they signed up for changed after they subscribed.

Amex separates this from fraud for a reason. Fraud-based codes cover transactions the card member says they didn’t authorize at all. C31 is different - the card member is not disputing that they made the purchase. They’re disputing the outcome. That distinction shapes everything about how the dispute gets handled and what evidence matters.

American Express places the burden on the merchant to show that what they delivered matched what they advertised; it’s the core tension in any C31 case, and it applies whether the product is physical, online, or a service.

The Triggers Behind a C31 Dispute

A C31 dispute starts the second a cardholder feels the product or service they received doesn’t match what they were caused to expect. That difference between expectation and reality is the actual driver here, and it can come from fairly small facts.

The obvious cases are easy to picture - a piece of furniture that looks nothing like the listing photo, or a hotel room described as “ocean view” that’s looking at a parking lot. But plenty of C31 disputes come from less dramatic situations. A vague service description, a product image that shows a color not included in the base price, or a subscription that auto-renews without the customer feeling warned - these can push toward a dispute.

Perception plays a big part in this. A merchant might believe their product page was accurate, but a cardholder can interpret the same page very differently. American Express doesn’t need the merchant to have lied - it just needs the cardholder to show a basic mismatch between what was promised and what was delivered.

Some business types see this more than others. E-commerce sellers face it when product descriptions are thin or when photos show items in the most flattering possible light. Travel businesses run into it with accommodation listings and experience packages where the fine print does heavy lifting. Subscription businesses are especially exposed when free trials convert to paid plans without enough friction or clarity in the billing process.

Digital goods and services add some more difficulty. When someone pays for software, a course, or a membership and it doesn’t perform the way the sales page implied, there’s no physical item to return and no easy way to measure what “as described” even means. These businesses face elevated dispute risk for exactly this reason.

The common thread across all these cases is that the cardholder felt misled - even if that wasn’t the merchant’s intention.

The C31 Chargeback Timeline Merchants Need to Know

Once a C31 chargeback lands in your account, the clock starts instantly. You have 20 days to submit your response to American Express. That window does not pause or extend.

After you send in your evidence, Amex will usually take 20 to 30 days to review everything and reach a decision. That means the full process, from the second the dispute is filed to the final ruling, runs between 40 and 60 days in total.

If you miss the 20-day response window, Amex will close the dispute in the cardholder’s favor automatically. There is no appeal process once that happens and the funds are gone.

This is where merchants lose cases they’d have won. The evidence was there - the records, the delivery confirmation, the product photos - but no one acted in time to use it.

Twenty days is enough time until you factor in how long it can take to pull records from different systems, contact a shipping carrier, or coordinate with a fulfilment team. The smartest move is to start on day one.

It also helps to know that Amex does not send reminders as the deadline gets close. You have to track the window yourself, so build an internal process to flag new chargebacks the same day they arrive and you’ll save lost cases in the future.

Building a Strong Response to a C31 Claim

When a C31 dispute lands in your queue, the most helpful thing you can do is think like the reviewer at American Express who will choose the outcome. That person is looking at your rebuttal cold, with no prior knowledge of the transaction. Your job is to make it easy for them to side with you.

Merchants win roughly 45% of chargebacks across the industry, according to PayCompass data from December 2025. That number goes up when the documentation is good and the story it tells is simple.

The core of a strong rebuttal is evidence that shows what you sold, how you described it, and what the customer received. A few documents carry the most weight here.

Screenshots of your original product listing or service description are a starting point because they show what the customer agreed to buy. Order confirmation emails help to set up the terms at the time of purchase. Delivery records and tracking data confirm that the item arrived, and photos or video of the product before shipment can address claims that it was misrepresented. Customer communication logs matter too - if the buyer never contacted you to raise a concern before filing the dispute, that context is worth noting.

These documents create a trail that answers the reviewer’s main question: does the merchant’s version of events hold up? If your listing description matches your product photos and neither one matches the customer’s complaint, that gap works in your favor.

One thing merchants sometimes skip is a written rebuttal letter that ties everything together. The evidence alone does not necessarily speak for itself. A short, factual summary that walks the reviewer through each document makes the whole package much easier to review.

Keep the tone in that letter neutral and factual. Frustration reads poorly to a third-party reviewer and does not add anything helpful to your case.

Reducing C31 Disputes Before They Start

The best time to work with a C31 claim is before a customer ever feels the need to raise one. That means looking at your own process with fresh eyes and recognizing where customers could walk away feeling misled - even accidentally.

A few small changes can close that gap considerably. Product descriptions are a place to start - check that yours matches what a customer actually receives, not just what sounds desirable. Photos should show the actual item, in actual conditions, without flattering angles that distort size or color. If your service comes with limits, say so in plain language before the buy - not buried in a terms document no one reads.

Post-buy communication is one of the most ignored areas. A quick confirmation email that sets basic timelines, or a heads-up when something changes, can stop frustration from turning into a formal dispute. Customers who feel kept up-to-date are far less likely to feel deceived.

It’s helpful to run a quick internal audit of the customer process from their perspective and flag anything that could create a difference between expectation and reality.

A few things worth checking:

• Do your product descriptions match what customers actually receive?
• Are your photos accurate and up to date?
• Do your service terms spell out what is and isn’t included?
• Do customers get communication after they buy, especially if anything changes?
• Are your return or cancellation conditions easy to find before checkout?

None of this needs to be a big project. Even fixing one or two of these touchpoints can make an actual difference to how customers experience your business.

C31 disputes come down to a mismatch in expectations, and most of that mismatch is preventable. The more transparent your process is from the start, the less room there is for a customer to feel they didn’t get what they paid for. If a situation does escalate, understanding whether you can still refund a customer after a chargeback starts is worth knowing before you need it.

Keep Your Chargebacks From Telling the Story for You

When a C31 chargeback lands in your queue, treat it as a signal worth taking seriously. Ask if the description could be tightened, if the fulfillment process introduced any inconsistency, or if customer communication fell short somewhere along the way. One dispute is a data point. A pattern is a problem - and the sooner you find it, the less damage it does.

Merchants who stay proactive about this cut back on their chargeback rate and build the customer experience that makes disputes less likely; it’s an actual, measurable benefit - and it starts with paying attention.