# Lists Contact Identity Conflicts

Lists contact identity conflicts across supported SIM-based channels (SMS, MMS, RCS).
Use this to identify contact records sharing the same identity (e.g., phone number), which must be resolved before enabling the Unified Contact ID feature.

Endpoint: GET /v1/projects/{project_id}/contacts:identityConflicts
Version: 1.0
Security: Basic, oAuth2

## Path parameters:

  - `project_id` (string, required)
    The unique ID of the project. You can find this on the Sinch Dashboard.

## Query parameters:

  - `page_size` (integer)
    Maximum number of conflicts to return (max 20).

  - `page_token` (string)
    Pagination token for retrieving next page.

## Response 200 fields (application/json):

  - `conflicts` (array)

  - `conflicts.identity` (string)
    The identity value (e.g., phone number) that is duplicated across contacts.

  - `conflicts.channels` (array)
    List of channels where this identity is present.

  - `conflicts.contact_ids` (array)
    List of contact IDs that share this identity.

  - `next_page_token` (string)
    Token for retrieving the next page of results.

## Response 400 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 403 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 500 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)

## Response 501 fields (application/json):

  - `error` (object)

  - `error.code` (integer)

  - `error.details` (array)

  - `error.details.type_url` (string)

  - `error.details.value` (string)

  - `error.message` (string)

  - `error.status` (string)