[Notice] Changes to Self-Match Prevention (SMP) Response Fields in Order APIs

Dear developers, this is Upbit Developer Center team.

Upbit is updating the smp_type response field for Self-Match Prevention (SMP) in the Order APIs.

After this update, the smp_type field will always be included in order creation and inquiry responses, with none as the default response value. Cases where the field was previously omitted or returned as null will now return none.

1.Schedule

• Release Date: November 9, 2026 (MON)
• Supported Countries: Singapore, Indonesia, Thailand

2.Key Changes

• The smp_type field will always be included in order creation and inquiry API responses.
• The default response value of smp_type will be none. If the field was previously omitted or returned as null, it will now return none.
• If smp_type is not specified in an order request, SMP will remain unapplied, as before.
• The existing SMP default behavior and order execution behavior will remain unchanged.
• For detailed specifications, refer to the documentation below.
  • Create Order | Test Order
  • Get Order | List Orders by IDs | List Open Orders | List Closed Orders
  • Cancel Order
  • Cancel and New Order
  • My Order and Trade

3.Important Notes

• If your application uses the smp_type response field, please review the changes and ensure compatibility with the new value.
• This update affects the response format only. The existing SMP policies and order execution behavior will remain unchanged.
• The release schedule is subject to change. Any changes will be announced through this notice.

If you have any inquiries, please contact us at [email protected].

We will respond as soon as possible.

Thank you.

Upbit Developer Center