Chargeback reason code fr4. Each chargeback is assigned a reason code that explains the justification for the chargeback. Chargeback reason code fr4

 
Each chargeback is assigned a reason code that explains the justification for the chargebackChargeback reason code fr4  Provide exemplary customer service

This involves the cardholder’s bank serving as a mediator, rather than eBay. Once you know why a chargeback happened, you can start building a case to address the claims that were. Mastercard uses reason code 4842 for late presentment chargebacks, but the conditions are considerably more complex. The new reason codes follow a format of two digits, a period, then a third digit. Like definitive guide involves the chargeback reason laws upon each of the four major cards networks. There are many reasons why a chargeback occurs, with over 100 reason codes listed across the major credit card brands. 2: EMV Liability Shift Non-Counterfeit Fraud: 10. A reason code or a chargeback reason code is a string of symbols (numbers and letters). If they think it does, they assign it a reason code and credit the funds back to the cardholder’s account. 3 is an updated version of legacy Visa reason code 72, which was phased out under the Visa Claims Resolution initiative. A chargeback happens when a customer asks their card-issuing bank to reverse a transaction. Scenario 2. The number of in-person fraud attacks attempted in the UK has dropped by 69% since 2004. Chargebacks: Your Guide to Reducing Hassle and Cost. American Express . Chargeback Base Codes by Network - 2023 Guide. Amex uses the same four main categories as Visa to organize its reason codes: Authorization, Card Member Disputes (which Visa refers to as Consumer Disputes), Fraud, and Processing Errors. Understanding these codes can help merchants understand why chargebacks are being filed and how to prevent them in the future. But, it could be up to 540 days, in some situations. If you don’t reply in time or with . Additionally, Amex uses a fifth "Miscellaneous" category. 0: Updated report version from 1. Protect stored cardholder data. At the same time, your account is debited for the chargeback amount, and the. If one member believed the other violated a Visa rule when handling a chargeback, they filed a pre-compliance chargeback for compensation. 4% of all transactions worldwide are made with EMV chip cards, which has led to a precipitous drop in card-present fraud. This code tells you why the customer or bank initiated the dispute. However, the return request is invalid, as the customer does not have a legitimate right to a refund for one reason or another. Visa chargebacks can be a major inconvenience for merchants. Explanation. Then they instruct the merchant’s acquiring bank to reverse the transaction and withdraw the funds from the merchant account. ”. 3. Upfront Chargeback If we determine we have sufficient information to pursue a Chargeback, we may debit your account up front. Solutions. The Fintech Times. The networks say merchants have a 45-day response window, but the Chase credit card chargeback time limit for merchants is 39 days. Once filed, the merchant generally has 20 days to respond to the chargeback. 3 falls under the “Consumer Disputes” category. A credit card chargeback is when a bank returns money to you because a credit card charge was fraudulent or you bought something online that wasn’t delivered or was. FR4: Immediate Chargeback Program: American Express: Inquiry/Miscellaneous: FR6: Partial Immediate Chargeback Program: Discover: Fraud: UA01: Fraud – Card Present Transaction:Here are the two possible scenarios: 1. 1 EMV Liability Shift 10. Specifically, these updates only pertain to transactions that are charged back after Oct. Spot these types of chargebacks using. A reason code is how banks categorize the reason for a chargeback. Fight; Hinder; Recover; Resources. For example, your trading name on the receipt differs to that on their statement. 0. Example: 25. Code. About American Express chargeback reason codes. Over the last three years, so-called friendly fraud has become the number-one source of fraud as reported by merchants are forced to deal with. 1. Summary of Changes, 13 December 2018Return fraud happens when consumers bring an item (or items) back to you to request a refund in the form of store credit or cash. Amazon Pay will send you a notification email when you get a chargeback, which will include details such as the order number and reason code. Write Off Reason Code . For each reason code, a definition is provided along with the merchant’s actions—or failure to act—that may have caused the chargeback,Reason Code; Ref Number ; Auth Code; For a brief overview of chargeback reason codes, refer to the table below. For example, 10. 3. Card Member received written acknowledgement from the Merchant for a Credit, but the Credit has not been applied to the Card Member’s Account. Reason codes differ by card brand (Visa, Mastercard); a complete list can be found here. Respond to invalid disputes. 4853 – Cardholder Dispute – Digital Goods Purchase of $25 or Less. 0: Changed report name from Downloadable Dispute Report to Case Report. 1 Card Recovery Bulletin or Exception File. In such circumstances, networks like Mastercard may allow consumers to reverse such a transaction by filing a chargeback. Moreover, there are other two categories to handle the Amex chargeback: inquiry and chargeback programs. Visa chargeback reason code 11. This can be a little confusing; Visa uses the term “dispute” in place of the term “chargeback. Note. 975. The cardholder does not recognize the Merchant. 1 Goods and Services Related Issues 1. The process is often troublesome; most times, reason codes do not show the actual basis why customer is disputing a transaction. #9. pdf), Text File (. Different card networks have different reason code systems. Visa has recently announced changes to its chargeback rules. 4808 Authorization-Related Chargeback. Chargeback reason code 10. Some Mastercard reason codes (4808, 4870, and 4871) proceed directly to arbitration if the issuer does not accept the merchant's representment. While the service is expensive, and only certain merchant processors know how to facilitate this, it might be a viable option for bustling e-commerce businesses as a way do decrease costly. Each time a consumer files a chargeback, the merchant is hit with a fee ranging from $20 to $100 per transaction. 1. American Express chargeback reason code C02 falls under the “Card Member Disputes” category. If one member believed the other violated a Visa rule when handling a chargeback, they filed a pre-compliance chargeback for compensation. See the list of reason codes below: Card Network. This process is called. 3: Not as described or defective merchandise: VCR Dispute Reason Code 13. 2 Compliance Cases2. Fight; Prevent;. It gets worse. Click on the Chargeback Reason Code drop-down menu, the user can change the. RDR will send an alert to the merchant, who can either initiate a refund to end the dispute or accept the chargeback. However, it's advisable to respond to whatever reason code you received from the bank. Reason Code. 2. Visa groups its chargeback codes into four main categories—fraud, authorization, processing errors, and customer disputes. EMV Liability Shift Non-Counterfeit Fraud. Chargeback reason codes will usually provide specific information about what kind of evidence is needed to get the chargeback reversed. Technical. Luckily, our reason code directory makes is a bit simpler to make sense of issuer codes. FAQ: What is Chargeback. You can see a reason code 11. If the order was genuinely not as described, then the cardholder has a case. It was originally just one facet of legacy reason code 81. The shorthand description is “Incorrect Account. Versions Affected: v5, v6. S. Mastercard Chargeback Guide is a comprehensive document that explains the rules and procedures for resolving disputes between cardholders, merchants and issuers. Amex Dispute Codes A chargeback reason code is a 2-to-4-digit alphanumeric code provided by the issuing bank involved in a chargeback, which is meant to identify the reason for the dispute. UA02 Fraud – Card Not Present Transaction. 4? Visa chargeback reason code 12. 3? Visa chargeback reason code 11. What is Visa chargeback reason code 11. The merchandise was as described or was not defective. A08 Authorization Approval Expired. Now, 10. EMV has been a mostly global standard since 2004. When the customer disputes a charge, the issuing bank then begins the chargeback process. MDR also retired reason code 4840 – Fraudulent Processing of Transactions. Summary of Changes, 13 December 2018The reason_code will be one of the following values: chargeback_reimbursement: The gross shows positive if the chargeback was resolved in the seller's favor, and the seller gets a refund. 1 Allocation Fraud and Authorization related chargebacks will be processed through an automated workflow. For each claim, you must craft your representment to suit the reason code under which the bank filed the chargeback. Note: Fraud is generally the most common chargeback dispute reason. Reference these when rebutting cardholder disputes at your small business. Written by Chargeback Gurus. The cardholder alleges they never received the products or services. Specifically, it has introduced a Compelling Evidence requirement for disputes falling under the Visa CE/30 chargeback reason code. The chargeback can be for the total transaction amount or a lesser amount. UA01 Fraud – Card Present Transaction. The cardholder may be the customer or the someone who lent their card to a friend or relative. Accessed October 17, 2022. 1 chargeback: 1. Based on the information provided, Paymentology will investigate the transaction being disputed. reasonable and that the transaction did not exceed this amount range. Not recognizing your billing descriptor on a statement. Documentation must be a direct result of cardholder communication. We've produced some changes to our API You're viewing documentation with his latest API. Visa requires processors and banks use to this system for multiple tasks, including challenging initial chargeback results. Chargeback Reason Codes and Descriptions. This means the cardholder claims that they received goods or services that were substantially different from what the merchant described. FR4: Fraud: Immediate Chargeback Program: This is a program that allows American Express to process any dispute immediately as cardholder. 4. 0 represents the first rules change of its kind that specifically provides merchants with the opportunity to reverse the fraud status applied to a transaction associated by reason code 10. About American Express chargeback reason codes. This chargeback reason code is also referred to as “Point-of-Interaction” Errors. What are chargeback reason codes? Mike Conway 2021-03-04T20:56:54+00:00. It’s even more frustrating if you don’t understand what the chargeback code means. Issued the credit but did not deposit it with its processing bank in time for it to appear on the cardholder’s next statement. After the introduction of Visa Claims Resolution, Visa set the goal of resolving all disputes in less than 31 days. Write customer-friendly policies. 1. 1 Card Recovery Bulletin or Exception File. DD: Unearned (disallowed) discount amount. 2. The issuer investigates. Chargeback Reason Code. Here are some chargeback reason codes by card type. American Express uses four main categories to organize its reason codes: Authorization, Card Member Disputes, Fraud, and Processing Errors as well as two additional categories, Inquiry/Miscellaneous and Chargeback Programs, to classify just a handful of reason codes. Response to retrieval request: Based on the information provided, the acquiring and issuing banks resolve the dispute, if possible. Submitted: The response has been sent and the issuer is. The reason_code will be one of the following values: chargeback_reimbursement: The gross shows positive if the chargeback was resolved in the seller's favor, and the seller gets a refund. 4 spec (Section 8. F01. 3. Once filed, the merchant generally has 20 days to respond to the chargeback. By entering your email, you agree to receive marketing emails from Shopify. A Charge is Disputed * We’ll work directly with the Card Member and try to resolve the case before reaching out to you. C02 | C04 | C05 | C08 | C14 | C18 | C28 | C31. Reason. Reason . Visa’s rules allow merchants to fight chargebacks by presenting the charge a second time along with evidence supporting its legitimacy. Supporting Documents You could potentially reverse a Chargeback by providing the. Each of the major card brands, including Visa, Mastercard, and others, have their own system of reason codes. A chargeback happens when a customer requests for a transaction to be reversed. But friendly fraud is much more ambiguous. Chargebacks are a major threat to businesses big and small. Reason codes are alphanumeric codes that provide the justification for granting a chargeback. There are no format changes to the sales file specification; there are additional values added to the sales file to designate chip card transactions. The business has the chance to refute the chargeback. STEP #7: Bank Review & Decisioning. Choose “chargeback and inquiry status” from the drop-down menu. Dubbed "Compelling Evidence 3. One catch is that CE3. Chargebacks were introduced as a form of consumer protection against. 04/09/14 Discover: DC, U02. There are plenty of reasons as to why this would happen, hence the many. Code. This typically. We want to clarify: this doesn’t imply that a transaction ID can reliably prevent chargebacks and fraud. Select the value “open”. 4 Funding Process. With the right compelling evidence,. The transaction amount is re-charged to the cardholder’s account, and the funds go back into your bank account. In some cases, errors can be resolved and reversed, but there is no equivalent to chargeback representment when it comes to ACH. The following are reason codes for the same scenario: Visa: Reason Code 30 Services not provided or merchandise not received. Availability Date: October 24th, 2021. UA10 Request Transaction Receipt (swiped card transactions) UA11 Cardholder claims fraud (swiped transaction, no signature) What follows is a quick reference guide for all the current reason codes for each of the four major credit card networks: Visa, Mastercard, American Express, and Discover. If the dispute is deemed valid, the bank or credit union proceeds to issue a chargeback to the merchant. Description. Request for Information. For each claim, you must craft your representment to suit the reason code under which the bank filed the chargeback. It covers topics such as chargeback rights, time frames, reason codes, arbitration and compliance. FR4: Establishment on Immediate Chargeback Agreement, Discontinue Future Billings: FR5: Establishment on Immediate Chargeback Program, Disputed Charges Debited: FR6:There are many reasons why a chargeback occurs, with over 100 reason codes listed across the major credit card brands. The other two chargeback reasons can be traced to very obvious causes — criminal activity and merchant mistakes. 3. Visa Chargeback Reason Codes. Reason codes are important to help merchants address recurring. 2. 6 Processing Transactions 7 Processing Transactions Swiping a Card Before swiping, make sure the stripe is facing the reader. Documentation must be a direct result of cardholder communication. Reason Code 53 Re-presentment Conditions. In friendly fraud, the cardholder. Provide exemplary customer service. 15, 2021. 1. But cardholders and merchants have different time limits. 800. Chargeback Reason Codes Retrieval Reason Codes 78 Int'l only Service Violation Code Discover 4541 AP 4586 AW. Chargeback. When a customer who's enrolled with 3-D Secure from their bank initiates a purchase, the tool will deploy during the. Fine Period - month 1 1 Acquirer receives Excessive Fraud Activity Notification 2. A chargeback happens when a customer requests for a transaction to be reversed. FR4: Immediate Chargeback Program-Miscellaneous: Amex: FR5: Immediate Chargeback Program-Miscellaneous: Amex: FR6: Immediate. The goal is to reduce. Always swipe the card once in the direction of the arrow shown on the reader. When a cardholder makes a purchase, but regrets it later, they may file a chargeback to recoup their money. The EFTA was first enacted in 1978. If a dispute is filed with Discover and a ticket retrieval request is sent, the merchant has just five calendar days to respond with. Mastercard Chargeback Guide is a comprehensive document that explains the rules and procedures for resolving disputes between cardholders, merchants and issuers. If the CID doesn’t match, merchants generally prompt the Card Member to re-enter it. Codes—Contains detailed information on the reason codes for the most common types of chargebacks that merchants receive . What Are Chargeback Reason Codes?. There are a variety of issues that can serve as the root causes of a chargeback, ranging from fraud to improper card processing to dissatisfaction with the quality of the goods or services provided. 10201. While there are reason codes related to processing errors that cause disputes, the majority of reason codes result from a cardholder disputing a charge. pdf), Text File (. Category. Here are some numbers on chargeback reason codes: 30% - the number of chargebacks that result from transactions made with a stolen card. If you get a chargeback,. As a merchant, you face the brunt of chargeback losses. Articles; Chargeback Reason Codes;. A code that identifies the reason that the write-off occurred. If you believe you have received an ACH return in error, you can contact your bank. Download our comprehensive guide to reason codes, modifiers, time limits, and compelling evidence. American Express Chargebacks / Disputes. It is caused by things like beliefs, opinions, morals, regrets, fear, and confusion. FAQ: What remains Chargeback Representment? TIPS. But friendly fraud is much more ambiguous. The agency must provide this documentation to Vantiv (via mail, fax, online/scanning) within 30 calendar days after the report date on the Visa/MasterCard. Chargeback Reason Codes List for Mastercard Chargeback Code Chargeback Reason 4801 Requested Transaction Data Not Received 4802 Requested / Required Information Illegible or Missing 4807 Warning Bulletin File 4808 Requested / Required Authorisation Not Obtained 4812 Account Number Not on File 4831 Transaction Amount Differs 4834 Duplicate. FR4 Full Recourse FR5 Full Recourse M01 Acct Notice - processed Chargeback authorization M02 Acct Notice - processed your credit M03 Acct Notice - processed your credit M04 Acct Notice - debit stands M05 Acct Notice - ch does not agree M06 Fraud - full data stream not provided M07 Rental Room Charges Only M08 Rental Room Charges Only the Chargeback. The chargeback period, or the time limit for filing a chargeback, depends on the card scheme and the chargeback reason code. /HealthCare IIAS Auto-sub Data Retrieval Request 70 Int'l only Effective Change Date AMEX F24 FR4 FR5 M01 M04 M10 P01 P04 P05 R03 R13 Duplicate Billing Captial damages M19 Offset adjustment Non-Matching Account Number. American Express chargeback reason codes REASON ODE ENCYCLOPEDIA sift. for chargeback reason code 4863 (Cardholder Does Not Recognize). Visa recently shortened chargeback time limits from 45 days to 30. The actual underlying cause of this chargeback is usually either true fraud or friendly fraud. To subscribe and learn more about the free online chargeback management system, or contact Chase Paymentech Client Services at 1. Try Shopify free for 3 days, no credit card required. EFM MONTHLY CRITERIA NUMBER OF E-COMMERCE TRANSACTIONS FRAUD CHARGEBACK AMOUNT FRAUD CHARGEBACK RATIO BASIS POINTS (BPS) 3DS UTILIZATION (EMV 3DS + DATA. Receiving a damaged product. Reasons a customer may initiate a chargeback include: Ordering a product and not receiving it. Jan 2020_Chargeback Reason Code Encyclopedia - Free download as PDF File (. A chargeback filed due to buyer’s remorse is a prime case of friendly fraud; a situation where a customer side-steps a return policy in order to gain an illegitimate refund. You’ll see that all chargebacks ultimately stem from one of three causes: merchant error, criminal fraud, or friendly fraud. Customer Dispute. chargeback_settlement: The gross shows negative if the chargeback was resolved in the buyer's favor, and the funds return to the buyer. FR4:. 60 due to merchandise, fees, overhead, and other sources of loss. Your business may not have to handle all chargeback cases — the processor will provide automatic representation in some. Pursuant to the Fair Credit Billing Act of 1974, cardholders have the right to dispute unauthorized or erroneous charges, and issuing banks must reverse a disputed transaction if the cardholder’s claim. What follows is a quick reference guide for all the current reason codes for each of the four major credit card networks: Visa, Mastercard, American Express, and Discover. For each reason code, a definition is provided along with the merchant’s actions—or failure to act—that may have caused the chargeback,• Rule changes for chargeback reason codes involving unjust enrichment associated with credits issued before or after a chargeback and/or after a second presentment. The merchant did not receive any returned merchandise. The good news for those using Shopify Payments, the hundreds of reason codes and buckets them into eight. Chargeback Reason Codes Fraud – Card-Not-Present (CNP) Network Reason Code Bank Initiation Timeframe Accel 81 120 calendar days from transaction processing date American Express FR2, F14, F24, F29 120 calendar days from transaction processing date Discover 4752 AA, 7030 UA02 Within 30 calendar days from the close date of the TRR The reason code also presents a timeline to fight the chargeback and what evidence is needed to reverse the chargeback. It is associated with a chargeback reason code, and it is specific per Card Scheme. 4: Other Fraud–Card-Absent Environment. There are a number of chargeback reason codes that are dedicated specifically to transaction errors. The chargeback process starts when a customer (or, less frequently, their issuing bank) challenges a transaction as invalid. Reason Code 53 re-presentments must be. You can learn more about each one by visiting the Mastercard Chargeback Guide. It makes sense that merchants would use any tool they can to prevent payment reversals, especially when it comes to true fraud. txt) or read online for free. 4. A chargeback can happen when a customer initiates a transaction dispute. It is a valuable resource for anyone involved in the payments industry. These are all the known American Express chargeback codes. FR4 FR6 M01 M10 P01 P03 P04 P05 P07 P08 P22 P23 R03 R13 Select a code to see the details QUICK REFERENCE Time to respond: 20 days from date of chargeback. Chargebacks911® can help your business manage all aspects of chargeback reason codes, with proprietary technologies and experience. On the home screen, tap “Disputes. Step 2: Customer initiates the chargeback. If the cardholder is using the chargeback process incorrectly — a practice commonly referred to as “friendly” fraud — the information provided to the bank. Chargebacks. 102. A chargeback can happen when a customer initiates a transaction dispute. It can protect against criminal fraud attacks, but equally important, it protects you from liability due to fraud and other losses. Chargeback Code: Type: Processing Error: P01: Unassigned Card Number: P03: Credit Processed as Charge: P04: Charge Processed as Credit: P05: Incorrect. It is a valuable resource for anyone involved in the payments industry. Everything You Need to Know (2023) Shopify POS has everything you need to sell in person, backed by everything you need to sell online. 9% with at least 100 total disputes. Your establishment is on an Immediate Chargeback agreement with American Express. Most acquiring banks put a timeframe on when customers can initiate a chargeback for a purchase. The first two digits indicate what category the reason code falls under: 10 for Fraud, 11 for Authorization, 12 for Processing Errors, and 13 for Customer Disputes. Fraud (10)& Authorization (11)Late Presentment Rules: Mastercard. American Express reason code 155, Visa reason code 30, MasterCard reason code 4855, and Discover reason code 4755 are all specific reason codes for Shopify payment chargebacks. Try Shopify free for 3 days, no credit card required. Category. Time Frames by Chargeback Type and Reason Code. . txt) or read online for free. Summary of Changes, 13 December 2018Chargeback Reason Codes; 4801: Requested Transaction Information not Received: 4802: Requested/Required Information Illegible or Missing:. Upfront Chargeback If we determine we have sufficient information to pursue a Chargeback, we may debit your account up front. In fact, 91. Truth is, only 30% of chargebacks involve criminal fraud. Otherwise, the acquiring bank sends a chargeback notification. The length and structure of Reason Codes changed from a current two-digit code to four to six digits that contains decimal(s) point(s). S. Jan 2020_Chargeback Reason Code Encyclopedia - Free download as PDF File (. Chargeback reason code. 04/20/13 Visa and MC Retrieval Codes — removed retired codes MC Reason Code 37Reason codes for the chargeback with detailed explanation of what it means, how to dispute the chargeback, and how to avoid future disputes. Fraud. Acquirer Use of Message Reason Code 7623. Step 1: Identify the Source. Each code refers to one of the specific rationales that card networks consider legitimate reasons for a customer dispute. 7 • A transaction has been processed against a card number that is invalid because it does not exist, has not been assigned to an active cardholder account, or is otherwise incorrect. FR4:. “It’s a lot tougher with Mastercard because they only use four main codes. The sale is revoked, and the merchant loses the sale amount plus fees. Because it’s so easy for customers to initiate a chargeback, retailers are bound to experience a request at. For a Mastercard late presentment chargeback to be valid, all the following conditions must apply: The cardholder’s account must be permanently closed. Chargeback reason code 4837: No Cardholder Authorization applies in situations where customers claim a card transaction was unauthorized, but do not feel the issue can be resolved through the merchant. Chargeback Reason Code. 2: 10: Fraud:Change of Chargeback Reason to an Authorization-related Chargeback Replace ‘Change of Reason within the Cardholder Dispute Chargeback’ with this section. Visa groups its various reason codes into several broad dispute categories. It’s typical to see fraud chargebacks roll in 2-3 months after the initial charges took place. Description. Depending on the reason for the chargeback, your evidence needs to prove you: verified the identity of the shopper. It should ultimately help prevent fraud and unwarranted chargebacks, specifically applying to disputes marked with a Visa reason code 10. A01. • Chargeback Reason Code – Each chargeback contains a reason code that signifies the reason for the dispute and the rules that must be followed by the issuer and the merchant in order to resolve the dispute. ACH return codes are a type of shorthand for specific information concerning the return, much like the card decline codes or dispute reason codes used by credit card networks. Code Reason (for Visa) 10. It can range from 60 to 120 days from the billing date. RDR will send an alert to the merchant, who can either initiate a refund to end the dispute or accept the chargeback. 1? Visa chargeback reason code 12. Any time. Though the credit card networks have a vast choice of codes, loopholes still happen. There is a USD 25 limit for the First Chargeback (Reason Code 22). These codes are broken down into five different category. Visa Chargeback Life Cycle. The ECI value tells you what to do next in a 3DS transaction — proceed, reject the purchase, or try again. Pre-arbitration (pre-arb): When the customer challenges a chargeback won by the business for a second time. 2. 3. By entering your email, you agree to receive marketing emails from Shopify. Once your business is approved, we will reimburse you for any eligible disputes (subject to the criteria above) you received during that time and waive any related dispute fees. If you're contesting a chargeback, you'll need solid evidence. At Visa they used to receive reason code 98. Reason Code. Get definitive guide includes the chargeback reason codes from all of the to majority card networks. Chargeback . What is Visa chargeback reason code 13. Chargeback reason American Express reason code Discover reason code Mastercard reason code Visa reason code; Cancelled subscription: C28: NF: 4841: 13. Poor order shipping: Not shipping goods or delivering services as promised, shipping to the wrong address, or not making the goods available. Paymentology will submit the chargeback using the appropriate chargeback reason code. In the distribution industry,. Reason Code North-America: Canada and United States of America; Reason Code:. The sales receipt and/or date and amount of the authorization if other than the transaction date. No Valid Authorization. Click “filter orders”. A chargeback reason code is a 2-to-4-digit alphanumeric code given by the issuing bank tangled in a chargeback.