OptionalavatarThe avatar ID of the issue type. Go to https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-avatars/#api-rest-api-3-avatar-type-system-get to choose an avatarId existing in Jira
OptionaldescriptionThe description of the issue type
OptionalhierarchyThe hierarchy level of the issue type. 0, 1, 2, 3 .. n; Negative values for subtasks
OptionalnameThe name of the issue type
OptionalonThe conflict strategy to use when the issue type already exists. FAIL - Fail execution, this always needs to be unique; USE - Use the existing entity and ignore new entity parameters
Optionalpcri
The payload for creating an issue type