> ## Documentation Index > Fetch the complete documentation index at: https://docs.zivio.com/llms.txt > Use this file to discover all available pages before exploring further. # Get a Milestone ## OpenAPI ````yaml /api-reference/v4/openapi.json get /milestones/{id} openapi: 3.1.0 info: title: API V4 version: '4' description: >- OAuth 2.0 secured API. Obtain an access token using client credentials to access protected endpoints. The regional endpoints listed below serve every Zivio organisation, so each request — including the token request — must carry a `zivio-tenant-id` header identifying yours. Requests without it are rejected with a 404 before any token is checked. contact: name: API Support email: support@zivio.com servers: - url: https://api.zivio.net/api/v4 description: Global API Router - url: https://api.eu.zivio.net/api/v4 description: EU Data Region - url: https://api.uk.zivio.net/api/v4 description: UK Data Region - url: https://api.us.zivio.net/api/v4 description: US Data Region security: - oauth2: [] tenantId: [] paths: /milestones/{id}: get: tags: - Milestones summary: Get a Milestone operationId: getMilestonesById parameters: - name: id in: path required: true schema: type: integer description: Milestone ID example: 123 responses: '200': description: Milestone details content: application/json: schema: $ref: '#/components/schemas/Milestone' example: id: 101 title: Website Redesign Project status: submitted client_suggested: false close_project: false comments: Additional information and context for this record. details: Additional information and context for this record. due_on: '2024-01-16' project_summary: >- Website Redesign Project - Complete redesign of corporate website with modern UX mandatory: false notes: Additional information and context for this record. original_id: 501 original_rate: cents: 150000 currency: GBP purchase_order_line_id: 501 rate: cents: 150000 currency: GBP submitted_at: '2024-01-16T10:30:00+00:00' interim_valuation_date: '2024-01-16T10:30:00+00:00' tiered_markup_fee: cents: 150000 currency: GBP children: - 201 - 202 parents: - 201 - 202 custom_fields: department: Engineering priority: high cost_code: CC-001 created_at: '2024-01-16T10:30:00+00:00' updated_at: '2024-01-16T10:30:00+00:00' project_id: 501 final_claim: 'false' delivered_on: '2024-01-16' approved_by: id: 101 first_name: Demo last_name: User email: user1@example.com org_id: 501 org_name: Acme Corporation rejected_by: id: 101 first_name: Demo last_name: User email: user1@example.com org_id: 501 org_name: Acme Corporation level_1_approved_by: id: 101 first_name: Demo last_name: User email: user1@example.com org_id: 501 org_name: Acme Corporation '401': description: >- Unauthorized - the access token is missing, expired, revoked or malformed content: application/json: schema: $ref: '#/components/schemas/Error' example: error: invalid_token error_description: >- The access token provided is expired, revoked, malformed, or invalid for other reasons '403': description: Forbidden - insufficient scope or access denied content: application/json: schema: $ref: '#/components/schemas/Error' examples: insufficient_scope: summary: Token lacks required scope value: error: insufficient_scope error_description: >- The request requires higher privileges than provided by the access token required_scope: milestones:read provided_scopes: - welcome:read access_denied: summary: User cannot access this resource value: message: You do not have permission to access this resource '404': description: Not found content: application/json: schema: $ref: '#/components/schemas/Error' example: message: Record not found security: - oauth2: - milestones:read tenantId: [] components: schemas: Milestone: type: object properties: id: type: integer title: type: string status: type: string enum: - open - submitted - approved - rejected - change_requested - on_hold - draft - cancelled - level_1_approved - closed example: open client_suggested: type: boolean example: true close_project: type: boolean example: true comments: type: string details: type: string due_on: type: string project_summary: type: string mandatory: type: boolean example: true notes: type: string original_id: type: integer original_rate: $ref: '#/components/schemas/Money' purchase_order_line_id: type: integer rate: $ref: '#/components/schemas/Money' submitted_at: type: string interim_valuation_date: type: string tiered_markup_fee: $ref: '#/components/schemas/Money' children: type: array items: type: integer description: Array of IDs parents: type: array items: type: integer description: Array of IDs custom_fields: type: object additionalProperties: type: string description: Key-value pairs of custom field data created_at: type: string updated_at: type: string project_id: type: integer final_claim: type: boolean example: true delivered_on: type: string approved_by: oneOf: - $ref: '#/components/schemas/EmbeddedUser' - type: 'null' rejected_by: oneOf: - $ref: '#/components/schemas/EmbeddedUser' - type: 'null' level_1_approved_by: oneOf: - $ref: '#/components/schemas/EmbeddedUser' - type: 'null' Error: type: object description: Error envelope returned by every non-2xx V4 response properties: error: type: string example: insufficient_scope error_description: type: string message: type: string details: type: object additionalProperties: true required_scope: type: string example: projects:read provided_scopes: type: array items: type: string Money: type: object properties: cents: type: integer example: 150000 currency: type: string example: GBP EmbeddedUser: type: object properties: id: type: integer first_name: type: string last_name: type: string email: type: string org_id: type: integer org_name: type: string securitySchemes: oauth2: type: oauth2 description: >- OAuth 2.0 client credentials. The access token from POST /oauth/token is sent as a bearer token. Request only the scopes you need. flows: clientCredentials: tokenUrl: https://api.zivio.net/api/v4/oauth/token scopes: bank_accounts:read: Read bank account details on suppliers and the org. catalogs:read: Read catalog items. cost_centers:read: Read cost center records. eoi_responses:read: Read responses to expressions of interest. eois:read: Read expressions of interest. offers:read: Read offers for projects. org_units:read: Read your organization unit hierarchy. org_users:read: Read members of your organization. resources:read: Read resource (worker) records. sales_invoices:read: Read invoices issued to clients. sales_milestones:read: Read milestones on sales engagements. skill_categories:read: Read the skill category taxonomy. skill_taxonomies:read: Read skill taxonomy structure. skills:read: Read individual skills. supplier_documents:read: Read documents uploaded by suppliers. supplier_lists:read: Read curated lists of suppliers. supplier_users:read: Read users belonging to supplier organizations. tax_types:read: Read configured tax types. users:read: Read user profiles. variation_orders:read: Read variation orders on projects. welcome:read: 'Required: confirms your identity to the application.' bid_evaluations:read: >- Read evaluation scorecards for bids, including criterion scores and quality, cost and total scores. bid_evaluations:write: >- Score bids against a project's quality criteria and override calculated cost scores. bids:read: Read bids submitted on projects. bids:write: >- Shortlist, select, eliminate and reinstate bids submitted on projects. invoices:read: Read invoices on projects. invoices:write: Create and update invoices. notes:read: Read notes on projects and EOIs. notes:write: Create and update notes on projects and EOIs. project_approvals:read: Read project approval workflows. project_approvals:write: Create and update project approval workflows. project_conversations:read: Read messages exchanged with suppliers on a project. project_conversations:write: Send messages to suppliers on a project. project_invitations:read: Read supplier invitations on projects. project_invitations:write: Invite suppliers to bid on projects. project_questions:read: Read supplier clarification questions on projects. project_questions:write: Answer and approve supplier clarification questions. projects:read: Read projects. projects:write: Create and update projects. milestones:read: Read milestones on projects. milestones:write: Create and update milestones. orgs:read: Read organization records. orgs:write: Create and update organization records. purchase_orders:read: Read purchase orders. purchase_orders:write: Create and update purchase orders. reviews:read: Read reviews left on suppliers. reviews:write: Create and update reviews. suppliers:read: Read supplier profiles. suppliers:write: Create and update supplier profiles. raw_scorecard_entries:write: Create and update raw scorecard entries. raw_scorecard_entries:read: Read raw scorecard entries. tasks:read: >- Read the acting user's task queue, including outstanding approvals and items to review. tasks:write: Complete and dismiss tasks in the acting user's task queue. act_as_user: >- Make requests as another user within the token holder's delegation boundary. tenantId: type: apiKey name: zivio-tenant-id in: header description: >- Your Zivio organisation identifier. The regional API endpoints serve every Zivio organisation, so each request must identify yours. ````