How do we pass fieldConfigSchemeId with a custom_field?

[sjuedes]

Trying to make a REST call to create a Project and am being told by our JIRA admin that two of the fields we're trying to use requires us to pass fieldConfigSchemeId because we're receiving an error stating the field doesn't exist.

I can't find anything on the API site in regard to POST in this context.

"customfield_10188": [{"id": "12059"}],

"customfield_10760": ["12275", "12274", "12277"],

[Jeroen Poismans]

Hi and welcome to the community!

Take a closer look at this:
https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-projects/#api-rest-api-3-project-post

You wil see this in the request fields:

fieldConfigurationScheme

integer

The ID of the field configuration scheme for the project. Use the Get all field configuration schemes operation to get a list of field configuration scheme IDs. If you specify the field configuration scheme you cannot specify the project template key.

Format: int64

Every project has a FieldConfigurationScheme. I think this is what you're request is lacking. Why it is not in the examples, I don't know but you will need to provide that along with other fields in the docs.

Jeroen