> ## Documentation Index > Fetch the complete documentation index at: https://docs-pos.solya.app/llms.txt > Use this file to discover all available pages before exploring further. # Update a taxonomy axis (axe de classification) > Replaces a whole axis (name / scope / source / tree / active) by id — the persistence anchor the back-office tree editor saves every edit through. The PATH `axisId` is authoritative — an `id` in the body is ignored. The `active` flag is preserved when the body omits it (a plain tree save never resurrects an archived axis). 404s for an unknown axis. ## OpenAPI ````yaml /openapi.json put /v1/taxonomy/{axisId} openapi: 3.0.3 info: title: Solya POS API version: 1.0.0 description: >- The Solya POS backend HTTP surface. Every documented operation is agent-ready: it carries an `operationId`, an agent-facing `description`, the `pos.*` scopes it enforces (`x-required-permissions`) and an `x-agent-tier`. Success responses return the payload as raw JSON; failures return the `ErrorResponse` envelope (`{ error: { code, message, statusCode } }`). servers: - url: / description: The backend, relative to its deployed origin. security: [] paths: /v1/taxonomy/{axisId}: put: tags: - Catalog summary: Update a taxonomy axis (axe de classification) description: >- Replaces a whole axis (name / scope / source / tree / active) by id — the persistence anchor the back-office tree editor saves every edit through. The PATH `axisId` is authoritative — an `id` in the body is ignored. The `active` flag is preserved when the body omits it (a plain tree save never resurrects an archived axis). 404s for an unknown axis. operationId: updateTaxonomyAxis parameters: - schema: type: string minLength: 1 in: path name: axisId required: true description: The classification axis id (e.g. `ax-colour`). requestBody: required: true content: application/json: schema: type: object properties: id: type: string minLength: 1 description: Axis id (ignored — the PATH axisId is authoritative). name: type: string minLength: 1 description: Display name of the axis. scope: type: string enum: - product - variant - movement description: >- What the axis classifies: `product`, `variant`, or `movement`. source: type: string enum: - managed - local description: Origin of the axis values. roots: default: [] description: The replacement node tree (unbounded depth). type: array items: 16879520-5f8e-44dd-8d1b-887c1d2e6704 active: description: >- Active flag; PRESERVED when omitted (a plain tree save never resurrects an archived axis). type: boolean required: - id - name - scope - source example: id: ax-season name: Édité scope: product source: local roots: - id: n-ss label: Printemps-Été children: [] responses: '200': description: The replaced axis. content: application/json: schema: type: object properties: id: type: string minLength: 1 name: type: string minLength: 1 scope: type: string enum: - product - variant - movement source: type: string enum: - managed - local roots: type: array items: 4af811bc-efbe-4418-a05d-5a46ab6a92d3 active: type: boolean required: - id - name - scope - source - roots additionalProperties: false description: The replaced axis. example: id: ax-colour name: Couleur scope: variant source: managed roots: - id: n-blue label: Bleu children: [] active: true '400': description: >- The request failed schema validation; `error.fieldErrors` lists the fields. content: application/json: schema: $ref: '#/components/schemas/ValidationErrorResponse' '401': description: No valid credential was presented — send a bearer token. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: The actor is authenticated but lacks the required `pos.*` scope. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: No resource matches the addressed identifier. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '422': description: The request is well-formed but violates a domain rule. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: An unexpected server error — safe to retry idempotent requests. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - bearerAuth: [] components: schemas: ValidationErrorResponse: type: object required: - error additionalProperties: false description: >- A `VALIDATION_FAILED` envelope carrying the offending fields in `fieldErrors`. properties: error: type: object required: - code - message - statusCode additionalProperties: false properties: code: type: string enum: - VALIDATION_FAILED message: type: string statusCode: type: integer fieldErrors: type: array description: >- One entry per rejected field: the field path and why it was rejected. items: type: object required: - field - message additionalProperties: false properties: field: type: string description: Dot-path of the offending field. message: type: string description: Why the field was rejected. ErrorResponse: type: object required: - error additionalProperties: false description: The uniform failure envelope every non-2xx response returns. properties: error: type: object required: - code - message - statusCode additionalProperties: false properties: code: type: string enum: - VALIDATION_FAILED - UNAUTHORIZED - FORBIDDEN - NOT_FOUND - CONFLICT - BUSINESS_RULE_VIOLATION - INTERNAL_ERROR description: >- Machine-readable kernel `ResultCode` — branch on this, not on `message`. message: type: string description: >- Human-readable explanation. Safe to surface; never leaks server internals. statusCode: type: integer description: >- The HTTP status, mirrored into the body so a client need not read headers. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT description: >- `Authorization: Bearer `. Accepts EITHER a Keycloak access token (scopes-in-token) OR an opaque POS session token; both resolve to the same `pos.*` scope vocabulary the route guards enforce. ````