> ## Documentation Index > Fetch the complete documentation index at: https://developer.plugchoice.com/llms.txt > Use this file to discover all available pages before exploring further. # Remove a customer > Ends your integration's access to the user's chargers in their own Plugchoice account (they keep them), releases the chargers at sites your team owns for them (as `deleteCharger` does), deletes a site that was theirs alone, and forgets the `external_user_id`. The same answer for a customer that's gone already, so retrying is safe. ## OpenAPI ````yaml api-reference/sdk/sdk-v1.openapi.yaml DELETE /customers/{external_user_id} openapi: 3.1.0 info: title: Plugchoice SDK API version: '2026-10-07' summary: Connect EV chargers to Plugchoice from your own app. description: > The API of the Plugchoice SDK. Your server creates client sessions, which say who Link (the SDK's onboarding feature) acts for and what it may reach; it reads the link sessions Link opened with them, and the chargers and what each can do. The `/session` endpoints are used only by Link's hosted flow at `connect.plugchoice.com`. Errors are RFC 9457 problem details; times are RFC 3339 UTC; ids are UUIDs. **Versions** are dates. Pin one with the `Plugchoice-Version` request header; without it you get the newest. Every response says which version answered in the same header. An unknown version is `400 unknown-version`. The only version is `2026-10-07`. contact: name: Plugchoice url: https://developer.plugchoice.com/sdk email: support@plugchoice.com servers: - url: https://api.plugchoice.com/sdk/v1 description: Production security: [] tags: - name: Client sessions description: >- Say who Link acts for, and what it may reach, for an hour. Integrations and Plugchoice users. - name: Link sessions description: >- Read the outcome of a link session, one time through Link. Integrations and Plugchoice users. - name: Chargers description: >- Read chargers and what they can do (`capabilities`). Integrations and Plugchoice users. - name: Transactions description: >- Read the charging sessions of your chargers, and of your users' chargers they let you read. Integrations only. - name: Session description: Link's hosted flow only. Opens and runs one link session. paths: /customers/{external_user_id}: delete: tags: - Chargers summary: Remove a customer description: > Ends your integration's access to the user's chargers in their own Plugchoice account (they keep them), releases the chargers at sites your team owns for them (as `deleteCharger` does), deletes a site that was theirs alone, and forgets the `external_user_id`. The same answer for a customer that's gone already, so retrying is safe. operationId: deleteCustomer parameters: - $ref: '#/components/parameters/PlugchoiceVersion' - name: external_user_id in: path required: true schema: $ref: '#/components/schemas/ExternalUserId' responses: '204': description: Removed '401': $ref: '#/components/responses/Unauthenticated' security: - integrationToken: [] components: parameters: PlugchoiceVersion: name: Plugchoice-Version in: header required: false description: >- The API version to answer with (`400 unknown-version` for one this API does not know). Every response carries the version that answered in the same header. schema: type: string enum: - '2026-10-07' schemas: ExternalUserId: type: string description: Your own id for one of your users. minLength: 1 maxLength: 200 pattern: ^[A-Za-z0-9._:@-]+$ Problem: type: object description: RFC 9457 problem details. required: - type - title - status properties: type: type: string format: uri description: >- Stable identifier, `https://developer.plugchoice.com/sdk/errors/{code}`. examples: - https://developer.plugchoice.com/sdk/errors/identity-taken title: type: string examples: - Identity already registered status: type: integer detail: type: string code: $ref: '#/components/schemas/ErrorCode' errors: type: object description: Only for `validation-failed`. Field path → messages. additionalProperties: type: array items: type: string site: $ref: '#/components/schemas/SiteSummary' description: Only for `charger-at-other-site`. claimable: type: boolean description: >- Only for `identity-taken`. Whether `POST /session/claims` can be tried. sign_in_to_share: type: boolean description: > Only for `identity-taken`, in a link session for your user's own account before they signed in. The charger may already be in their account: once signed in, they share it (`POST /session/chargers/{charger_id}/share`). vendor_charger: type: object description: >- Only for problems connecting a Zaptec installation's chargers in the hosted flow. Which charger of the installation it is about. required: - id - serial properties: id: type: string description: The brand's id (`ZaptecCharger.id`). serial: type: string ErrorCode: type: string description: >- The last path segment of `type`, for switch statements. New codes may be added. enum: - unauthenticated - forbidden - scope-missing - sdk-access-required - profile-incomplete - sign-in-not-needed - sign-in-required - site-not-saved - sign-in-code-required - code-invalid - two-factor-not-needed - two-factor-invalid - two-factor-locked - not-found - validation-failed - rate-limited - unknown-version - unsupported-device-type - scope-required - client-session-expired - site-required - start-code-invalid - session-ended - consent-required - consent-not-needed - location-required - location-already-set - method-not-allowed - identity-taken - identity-busy - identity-not-taken - charger-at-other-site - handover-not-offered - control-held - pincode-invalid - claim-exists - claim-closed - charger-offline - plug-in-not-available - nothing-to-complete - vendor-sign-in-failed - vendor-sign-in-required - vendor-not-permitted - vendor-charger-offline - vendor-rate-limited - vendor-unavailable - vendor-error - bad-request - server-error SiteSummary: type: object required: - id - name properties: id: type: string format: uuid name: type: string responses: Unauthenticated: description: Missing, invalid or expired token (`unauthenticated`). content: application/problem+json: schema: $ref: '#/components/schemas/Problem' securitySchemes: integrationToken: type: oauth2 description: > Your integration's client credentials (test or live). The token acts as your integration's team and lasts 1 hour; request a new one when it expires. Send `client_id`, `client_secret` and `grant_type=client_credentials`. No OAuth scopes are needed. flows: clientCredentials: tokenUrl: https://app.plugchoice.com/oauth/token scopes: {} ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.