---
title: "ChannelUpgradeTry defines a rpc handler method for MsgChannelUpgradeTry."
method: POST
path: "/ibc.core.channel.v1.Msg/ChannelUpgradeTry"
tags: ["Msg"]
---

# ChannelUpgradeTry defines a rpc handler method for MsgChannelUpgradeTry.

`POST /ibc.core.channel.v1.Msg/ChannelUpgradeTry`

## Request body

- object
  - `port_id` string
  - `channel_id` string
  - `proposed_upgrade_connection_hops` string[]
  - `counterparty_upgrade_fields` object — UpgradeFields are the fields in a channel end which may be changed during a channel upgrade.
    - `ordering` 'ORDER_NONE_UNSPECIFIED' | 'ORDER_UNORDERED' | 'ORDER_ORDERED' — - ORDER_NONE_UNSPECIFIED: zero-value for channel ordering - ORDER_UNORDERED: packets can be delivered in any order, which may differ from the order in which they were sent. - ORDER_ORDERED: packets are delivered exactly in the order which they were sent
    - `connection_hops` string[]
    - `version` string
  - `counterparty_upgrade_sequence` string, uint64
  - `proof_channel` string, byte
  - `proof_upgrade` string, byte
  - `proof_height` object — Normally the RevisionHeight is incremented at each height while keeping RevisionNumber the same. However some consensus algorithms may choose to reset the height in certain conditions e.g. hard forks, state-machine breaking changes In these cases, the RevisionNumber is incremented so that height continues to be monitonically increasing even as the RevisionHeight gets reset
    - `revision_number` string, uint64
    - `revision_height` string, uint64
  - `signer` string

## Response `200`

A successful response.

## Other responses

- `default` — An unexpected error response.

## Changes

- **2024-07-11** `ca7e84576c8e` — 1 info
  - endpoint added
- **2024-05-15** `41fb8b09e244` — 1 breaking
  - api path removed without deprecation
- **2024-03-06** `0ded0c5649f1` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/pokt-network/apis/http-api-console/changes/ibc.core.channel.v1.Msg/ChannelUpgradeTry/post.md)

---

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