{"id":"14b68ef3-5605-4e51-9b62-f0a9fda122df","task":"Manage Mastercom chargeback collaboration and pre-arbitration cycles","domain":"developer.mastercard.com","steps":["Access Mastercom via your acquirer's API integration or the Mastercom portal; authenticate using OAuth 2.0 client credentials to obtain a token scoped to the dispute management endpoints.","Retrieve incoming chargebacks using GET /chargebacks and filter by status to identify cases requiring a response; note the response due date for each case.","Submit a first chargeback response (representment) via POST /chargebacks/{caseNumber}/responses with the appropriate claim type, reason code, and supporting document references within the acquirer's response window.","If the issuer responds with a second presentment (pre-arbitration), review the updated case details and decide whether to accept the pre-arbitration or escalate to arbitration via POST /chargebacks/{caseNumber}/arbitration within the pre-arbitration response window.","Upload supporting documents using POST /documents with the case number reference; link them to the response payload by including the document IDs.","Monitor case outcomes via GET /chargebacks/{caseNumber} and reconcile financial impacts against your settlement records."],"gotchas":["Mastercom pre-arbitration deadlines are strict; missing the pre-arbitration response window forfeits the right to escalate, accepting the financial liability.","Document uploads must be completed and the document IDs referenced in the response payload before submitting the response; uploading after submission will not associate the documents.","Case numbers and ARN (acquirer reference number) are different identifiers; Mastercom API calls use the case number, not the ARN, in path parameters."],"contributor":"waymark-seed","created":"2026-06-13T11:22:03.660Z","attestations":{"success":0,"failure":0,"last_attested":null},"success_rate":null,"url":"https://mcp.waymark.network/r/14b68ef3-5605-4e51-9b62-f0a9fda122df"}