---
title: "Update a Session's FIX Sequence Numbers"
method: PATCH
path: "/v1/SessionsSeq/{instance}/{session}"
tags: ["Sessions"]
---

# Update a Session's FIX Sequence Numbers

`PATCH /v1/SessionsSeq/{instance}/{session}`

## Request

- Base URL: `https://app.fixsim.com`
- URL: `https://app.fixsim.com/v1/SessionsSeq/{instance}/{session}`
- Auth: none declared

## Path parameters

- `instance` string, required
- `session` string, required

## Query parameters

- `sending` integer
- `rcvd` integer

## Response `200`

OK

- SessionInfo
  - `SessionName` string
  - `FIXVersion` string
  - `SenderCompId` string
  - `TargetCompId` string
  - `IsEnabled` boolean
  - `IsLoggedIn` boolean
  - `IsAcceptor` boolean
  - `IPAddress` string
  - `Port` integer
  - `StartTime` string
  - `EndTime` string
  - `TimeZone` string
  - `AppDataDictionary` string
  - `SendingSeqNum` integer
  - `RcvdSeqNum` integer

---

[API](https://skmtc.dev/fixsim/apis/fixsim-web-api-beta.md) · [All operations](https://skmtc.dev/fixsim/apis/fixsim-web-api-beta/llms.txt) · [OpenAPI document](https://skmtc.dev/fixsim/apis/fixsim-web-api-beta/revisions/4dd9d40b01d6?raw)