Where the applicant does not provide sufficient information, the agency should seek any additional information it needs from them before determining whether to proceed with the application.
Os nad yw'r ymgeisydd yn darparu digon o wybodaeth, dylai'r asiantaeth ofyn am unrhyw wybodaeth ychwanegol sydd ei hangen arni cyn penderfynu a ddylid bwrw ymlaen â'r cais.