GMOMW0008E The field `field_name` of service interface `service_interface_name` is not a composite array for service name: `service_name`.
or
The field `field_name` of service interface `service_interface_name` is not a composite array for service name: `service_name`, API name: `api_name`, API operation: `api_operation`.

or

Explanation The named field was expected to be a composite. Use the getJSONschema action to get
the correct data schema.

Programmer response
Use the HTTP method GET to call
the administration interface to get the correct data schema:
/zosConnect/services/{serviceName}/schema/request
/zosConnect/services/{serviceName}/schema/response