> ## Documentation Index
> Fetch the complete documentation index at: https://docs.timelockdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Source System



## OpenAPI

````yaml PATCH /sourceSystem/{COMPANY_ID}/{SYSTEM_ID}
openapi: 3.0.0
info:
  title: TimeLockData API
  description: Public API for evidence management and blockchain traceability
  version: 1.0.0
  contact: {}
servers:
  - url: https://api.timelockdata.com/api/v1
    description: Production
security: []
tags: []
paths:
  /sourceSystem/{COMPANY_ID}/{SYSTEM_ID}:
    patch:
      tags:
        - Source System
      summary: Update a source system
      operationId: SourceSystemController_updateSourceSystem
      parameters:
        - name: COMPANY_ID
          required: true
          in: path
          description: Company identifier
          schema:
            type: string
        - name: SYSTEM_ID
          required: true
          in: path
          description: Source system identifier
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateSourceSystemRequest'
      responses:
        '200':
          description: Source system updated
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BasicResponse'
      security: []
components:
  schemas:
    UpdateSourceSystemRequest:
      type: object
      properties:
        permissions:
          type: string
          description: Permission level for the source system
          enum:
            - I
            - U
            - R
            - A
        apiKey:
          type: string
          description: API key for the source system
      required:
        - permissions
    BasicResponse:
      type: object
      properties:
        status:
          type: string
          description: Response status
      required:
        - status

````