---
title: "Changes to Create a client session"
method: POST
path: "/client-session"
---

# Changes to Create a client session

`POST /client-session`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 6 revisions.

- **2026-09-30** `6b60d7283338`: 18 breaking, 1 warning, 11 info

## Changes

- **2026-09-30** `6b60d7283338`: 18 breaking, 1 warning, 11 info
  - removed the enum value `MRO` of the request property `currencyCode`
  - removed the enum value `XAG` of the request property `currencyCode`
  - removed the enum value `XAU` of the request property `currencyCode`
  - removed the enum value `XBA` of the request property `currencyCode`
  - removed the enum value `XBB` of the request property `currencyCode`
  - removed the enum value `XBC` of the request property `currencyCode`
  - removed the enum value `XBD` of the request property `currencyCode`
  - removed the enum value `XDR` of the request property `currencyCode`
  - removed the enum value `XFU` of the request property `currencyCode`
  - removed the enum value `XPD` of the request property `currencyCode`
  - removed the enum value `XPT` of the request property `currencyCode`
  - removed the enum value `XSU` of the request property `currencyCode`
  - removed the enum value `XTS` of the request property `currencyCode`
  - removed the enum value `XUA` of the request property `currencyCode`
  - the `warnings` response's property type changed from `object` to `array` for status `200`
  - removed the required property `warnings/code` from the response with the `200` status
  - removed the required property `warnings/message` from the response with the `200` status
  - removed the required property `warnings/type` from the response with the `200` status
  - added the new `EFTPOS` enum value to the `paymentMethod/orderedAllowedCardNetworks/items/` response property for the response status `200`
  - added the new optional request property `approvalMode`
  - added the new `EFTPOS` enum value to the request property `paymentMethod/orderedAllowedCardNetworks/items/`
  - added the new `SLE` enum value to the request property `currencyCode`
  - added the new `STN` enum value to the request property `currencyCode`
  - added the new `VED` enum value to the request property `currencyCode`
  - added the new `VES` enum value to the request property `currencyCode`
  - added the new `XCG` enum value to the request property `currencyCode`
  - added the new `ZWG` enum value to the request property `currencyCode`
  - added the optional property `approvalMode` to the response with the `200` status
  - added the optional property `currentAttemptId` to the response with the `200` status
  - added the optional property `orderedAllowedCardNetworks` to the response with the `200` status

---

[Operation](https://skmtc.dev/primer/apis/primer-api/docs/client-session/post.md) - [API](https://skmtc.dev/primer/apis/primer-api.md) - [Page](https://skmtc.dev/primer/apis/primer-api/changes/client-session/post)