About RMA in SAP Cloud for Customer

Dear experts,

As my Cloud for customer system is not integrated with ERP yet, I would like to know how RMA in SAP Cloud for customer works if it's integrated with SAP ERP? When will a customer return order be created in ERP? When we set the status as In Process - Waiting to receive Retun?

Please kindly advise!

Thanks a lot!

Regards,

Wendy