---
title: "CustomerMergePreview"
description: "Preview of customer merge request results"
doc_type: graphql
doc_category: adminGraphQL
doc_version: v20270301
source_url:
  html: 'https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-preview'
  md: 'https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-preview.md'
---
# CustomerMergePreview

Preview of customer merge request results

- **API Version:** v20270301
- **API Type:** Admin
- **API Protocol:** GraphQL
- **Operation Type:** Object

## Type Signature

`CustomerMergePreview`

## Fields

* `alternateFields`

  [CustomerMergePreviewAlternateFields](https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-preview-alternate-fields.md)

  Default fields that will be overwritten after a customer merge

* `blockingFields`

  [CustomerMergePreviewBlockingFields](https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-preview-blocking-fields.md)

  Possible truncated fields for customer merge preview. Unless edited, these fields will be automatically truncated during customer merge, retaining restricted characters

* `customerMergeErrors`

  [[CustomerMergeError]](https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-error.md)

  Error preventing client merge

* `defaultFields`

  [CustomerMergePreviewDefaultFields](https://developer.shopline.com/docs/admin-graph-ql-api/customers/objects/customer-merge-preview-default-fields.md)

  Fields retained after merging two customers

* `resultingCustomerId`

  [ID](https://developer.shopline.com/docs/admin-graph-ql-api/common/scalars/id.md)

  The customer ID after merging the two customers

## Schema Definition

```graphql
type CustomerMergePreview { 
	alternateFields: CustomerMergePreviewAlternateFields
	blockingFields: CustomerMergePreviewBlockingFields
	customerMergeErrors: [CustomerMergeError]
	defaultFields: CustomerMergePreviewDefaultFields
	resultingCustomerId: ID 
}
```

## Field from

* [Query](https://developer.shopline.com/docs/admin-graph-ql-api/customers/queries/customer-merge-preview.md).customerMergePreview

  返回客户合并请求的预览

## Error Handling

For detailed information about common codes, see [Status and error codes](https://developer.shopline.com/docs/apps/api-instructions-for-use/graph-ql-admin-api/overview.md#status-and-error-codes).