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

# Deposit margin

> Deposit margin into a derivative account.



## OpenAPI

````yaml /en/openapi/tcbs-v1.yaml post /khronos/v1/cash/deposit/update
openapi: 3.0.3
info:
  title: TCBS iFlash Open API
  description: REST APIs for trading stocks and derivatives on TCBS.
  version: 1.0.0
  contact:
    email: openapi@tcbs.com.vn
servers:
  - url: https://openapi.tcbs.com.vn
    description: Production
security:
  - bearerAuth: []
paths:
  /khronos/v1/cash/deposit/update:
    post:
      summary: Deposit margin
      description: Deposit margin into a derivative account.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                accountId:
                  type: string
                  description: Custody account number.
                subAccountId:
                  type: string
                  description: Derivative account number.
                amount:
                  type: number
                  format: double
                  description: Deposit margin amount.
                paymentContent:
                  type: string
                  description: Deposit transaction description.
              required:
                - accountId
                - subAccountId
                - amount
      responses:
        '200':
          description: Successful response
          content:
            application/json:
              schema:
                type: object
                properties:
                  cmd:
                    type: string
                    description: Business type.
                  rc:
                    type: string
                    description: 'Result code. 1: success, < 0: error.'
                  rs:
                    type: string
                    description: Error detail.
                  oID:
                    type: string
                    description: Transaction ID.
                  data:
                    type: array
                    items:
                      type: object
                    description: Response data (contains transactionId).
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````

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