> ## Documentation Index > Fetch the complete documentation index at: https://docs.voucherify.io/llms.txt > Use this file to discover all available pages before exploring further. # Batch assign/unassign tier structures > ⚠️ **BETA endpoint** This is a work-in-progress documentation of a BETA endpoint. The parameters, fields, request and response bodies, and other data may subject to change. If you want to share feedback or improvements, contact Voucherify support or your Technical Account Manager. Assigns and/or unassigns tier structures to/from a program in a single batch. Unassign operations are processed before assign operations. Unassigning is only allowed while the program is in `DRAFT` status - otherwise the request is rejected with `423 Locked` (key `non_draft_program`). A program can have at most one tier structure assigned. In strict mode (default) missing tier structures, inactive tier structures or missing assignments cause the whole batch to fail. ## OpenAPI ````yaml /openapi/loyalties-v2.json post /v2/loyalties/programs/{programId}/tier-structures/batch openapi: 3.1.0 info: title: Voucherify Loyalty v2 API version: 2.0.0 description: >- Complete OpenAPI specification for the Voucherify Loyalty v2 API. All endpoints require the LOYALTY_V2 feature flag. Combined from per-domain specs: programs.yaml, members.yaml, program-operations.yaml, card-definitions.yaml, earning-rules.yaml, tier-structures.yaml, benefits.yaml, rewards.yaml, examine.yaml servers: - url: '{protocol}://{host}' variables: protocol: default: https enum: - https - http host: default: api.voucherify.io security: - bearerAuth: [] X-App-Id: [] X-App-Token: [] tags: - name: Programs description: >- Loyalty program CRUD, lifecycle management, program-scoped resource assignments (card definitions, earning rules, rewards, tier structures), member management (create, list, get, activate, deactivate, delete), card operations (points adjustment, pending points, expiring points, transactions), reward purchases, and activity history. - name: Card Definitions description: >- CRUD operations, lifecycle management, and activity history for card definitions. Card definitions describe the configuration for loyalty cards, including code generation, points expiration, earning/spending limits, pending points, refunds, and balance settings. - name: Earning Rules description: >- Manage earning rules that define how customers earn points or receive incentives based on triggers (events, segments, custom events). Includes CRUD, lifecycle, and activity history. - name: Tier Structures description: >- CRUD operations, lifecycle management, and activity history for tier structures. Includes nested tier definitions (create, list, update, delete) within tier structures. Tier structures define the tiering model for loyalty programs — how members qualify for and move between tiers. - name: Benefits description: >- Manage benefit definitions (fixed points, proportional points, material, digital). Includes CRUD, lifecycle transitions, and activity history. - name: Rewards description: >- CRUD, lifecycle operations, and activity history for reward definitions. Rewards can be material (product/SKU) or digital (discount coupons, gift vouchers). - name: Examine description: >- Evaluation endpoints that estimate earning opportunities and reward availability for a customer across their loyalty program memberships, without side effects. paths: /v2/loyalties/programs/{programId}/tier-structures/batch: post: tags: - Programs summary: Batch assign/unassign tier structures description: > ⚠️ **BETA endpoint** This is a work-in-progress documentation of a BETA endpoint. The parameters, fields, request and response bodies, and other data may subject to change. If you want to share feedback or improvements, contact Voucherify support or your Technical Account Manager. Assigns and/or unassigns tier structures to/from a program in a single batch. Unassign operations are processed before assign operations. Unassigning is only allowed while the program is in `DRAFT` status - otherwise the request is rejected with `423 Locked` (key `non_draft_program`). A program can have at most one tier structure assigned. In strict mode (default) missing tier structures, inactive tier structures or missing assignments cause the whole batch to fail. operationId: batchProgramTierStructureAssignments parameters: - name: id in: path required: true description: Unique program identifier. schema: type: string pattern: ^lprg_[a-f0-9]+$ requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/ProgramTierStructureBatchRequest' responses: '200': description: Batch processing result. content: application/json: schema: $ref: '#/components/schemas/ProgramTierStructureBatchResponse' '400': description: >- Validation error - request body or query parameters failed validation, or the operation is not allowed in the current resource state. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: Resource not found. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '409': description: Conflict - e.g. duplicate resource or invalid state transition. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '423': description: >- Resource locked - a related resource is in a state that prevents this operation. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' components: schemas: ProgramTierStructureBatchRequest: type: object description: > Batch of tier structure assignment operations. `unassign` operations are processed before `assign` operations. Duplicate ids within a batch are rejected. properties: assign: description: Tier structures to assign. oneOf: - type: array items: $ref: '#/components/schemas/ProgramTierStructureAssignItem' maxItems: 10 - type: 'null' unassign: description: Tier structures to unassign. oneOf: - type: array items: $ref: '#/components/schemas/ProgramTierStructureUnassignItem' maxItems: 10 - type: 'null' additionalProperties: false ProgramTierStructureBatchResponse: type: object description: >- Result of a tier structure assignment batch. Keys are null when the corresponding operation list was not provided. properties: assigned: description: >- Assignments created by the batch, or null when no assign operations were requested. oneOf: - type: array items: $ref: '#/components/schemas/ProgramTierStructureAssignment' - type: 'null' unassigned: description: >- Assignments removed by the batch, or null when no unassign operations were requested. oneOf: - type: array items: $ref: '#/components/schemas/ProgramTierStructureAssignment' - type: 'null' ErrorResponse: type: object description: Standard error response returned by all Loyalty v2 endpoints. properties: code: type: integer description: HTTP status code of the error. key: type: string description: Machine-readable error key. message: type: string description: Human-readable error message. details: type: string description: Additional details about the error. request_id: type: string description: Identifier of the request that produced the error. ProgramTierStructureAssignItem: type: object description: Tier structure to assign to the program. properties: id: type: string description: Unique tier structure identifier. pattern: ^lts_[a-f0-9]+$ required: - id additionalProperties: false ProgramTierStructureUnassignItem: type: object description: Tier structure to unassign from the program. properties: id: type: string description: Unique tier structure identifier. pattern: ^lts_[a-f0-9]+$ required: - id additionalProperties: false ProgramTierStructureAssignment: type: object description: A tier structure assigned to a program. properties: tier_structure_id: type: string description: Unique tier structure identifier. pattern: ^lts_[a-f0-9]+$ created_at: type: string format: date-time description: Assignment creation timestamp (ISO 8601). object: type: string description: Object type marker. const: program_tier_structure securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: JWT X-App-Id: type: apiKey name: X-App-Id in: header X-App-Token: type: apiKey name: X-App-Token in: header ````