This method is used by the seller to add one or more evidence files to address a payment dispute initiated by the buyer. The unique identifier of the payment dispute is passed in as a path parameter, and unique identifiers for payment disputes can be retrieved with the <strong>getPaymentDisputeSummaries</strong> method.<br><br><span class="tablenote"><strong>Note:</strong> All evidence files should be uploaded using <strong>addEvidence</strong> and <strong>updateEvidence</strong> before the seller decides to contest the payment dispute. Once the seller has officially contested the dispute (using <strong>contestPaymentDispute</strong> or through My eBay), the <strong>addEvidence</strong> and <strong>updateEvidence</strong> methods can no longer be used. In the <strong>evidenceRequests</strong> array of the <strong>getPaymentDispute</strong> response, eBay prompts the seller with the type of evidence file(s) that will be needed to contest the payment dispute.</span><br><br>The file(s) to add are identified through the <strong>files</strong> array in the request payload. Adding one or more new evidence files for a payment dispute triggers the creation of an evidence file, and the unique identifier for the new evidence file is automatically generated and returned in the <strong>evidenceId</strong> field of the <strong>addEvidence</strong> response payload upon a successful call.<br><br>The type of evidence being added should be specified in the <strong>evidenceType</strong> field. All files being added (if more than one) should correspond to this evidence type.<br><br>Upon a successful call, an <strong>evidenceId</strong> value is returned in the response. This indicates that a new evidence set has been created for the payment dispute, and this evidence set includes the evidence file(s) that were passed in to the <strong>fileId</strong> array. The <strong>evidenceId</strong> value will be needed if the seller wishes to add to the evidence set by using the <strong>updateEvidence</strong> method, or if they want to retrieve a specific evidence file within the evidence set by using the <strong>fetchEvidenceContent</strong> method.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}

This method is used by the seller to add one or more evidence files to address a payment dispute initiated by the buyer. The unique identifier of the payment dispute is passed in as a path parameter, and unique identifiers for payment disputes can be retrieved with the <strong>getPaymentDisputeSummaries</strong> method.<br><br><span class="tablenote"><strong>Note:</strong> All evidence files should be uploaded using <strong>addEvidence</strong> and <strong>updateEvidence</strong> before the seller decides to contest the payment dispute. Once the seller has officially contested the dispute (using <strong>contestPaymentDispute</strong> or through My eBay), the <strong>addEvidence</strong> and <strong>updateEvidence</strong> methods can no longer be used. In the <strong>evidenceRequests</strong> array of the <strong>getPaymentDispute</strong> response, eBay prompts the seller with the type of evidence file(s) that will be needed to contest the payment dispute.</span><br><br>The file(s) to add are identified through the <strong>files</strong> array in the request payload. Adding one or more new evidence files for a payment dispute triggers the creation of an evidence file, and the unique identifier for the new evidence file is automatically generated and returned in the <strong>evidenceId</strong> field of the <strong>addEvidence</strong> response payload upon a successful call.<br><br>The type of evidence being added should be specified in the <strong>evidenceType</strong> field. All files being added (if more than one) should correspond to this evidence type.<br><br>Upon a successful call, an <strong>evidenceId</strong> value is returned in the response. This indicates that a new evidence set has been created for the payment dispute, and this evidence set includes the evidence file(s) that were passed in to the <strong>fileId</strong> array. The <strong>evidenceId</strong> value will be needed if the seller wishes to add to the evidence set by using the <strong>updateEvidence</strong> method, or if they want to retrieve a specific evidence file within the evidence set by using the <strong>fetchEvidenceContent</strong> method.

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}