We are currently experiencing some malfunction of our LDM API within projects containing Custom Data dimension(Fiscal calendar included).
Please be so kind and do not use this API or CloudConnect modeller to update your model until we find a solution, as it might execute some unwanted changes to your models. Our Engineers are already hardworking on a solution and we will keep you posted with the most relevant updates.
We apologize for the inconvenience and thank you for your patience. We will provide constant feedback as we move forward.
GoodData Support team