Set priority to "undertermined" via REST API

[HalfK HalfK]

Hi,

Is there a way to set "priority" field to be "undertermined" while using JIRA creation REST API? I find I can only set "priority" to 1-4. Other values will cause error:

priority: The priority selected is invalid.

In the JIRA creation web page, I can see there is an option "undetermined" available in the priority field.

Thanks

[Nic Brough -Adaptavist-]

Is your "undetermined" a translation for an empty priority?  You'll want to set the priority to "null" or blank to set that.