CustomField Configuration

Hello All
I’m using “jira:customFieldType” to create my own customFieldType with type object.

I’m using Jira UI to create the customField, using my previous configurated customFieldType.

I’m trying to access the configuration of the customField using:
https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-custom-field-configuration--apps-/#api-rest-api-3-app-field-fieldidorkey-context-configuration-get
But i’m only getting the ID and no configuration info.

Also, when i try to use:
https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-custom-field-values--apps-
I get a forbidden response

I found out that if you haven’t configure any context the configuration would be empty.