CBTM02100 | Claims, awards and rates: Duration of claims and awards
From HM Revenue & Customs · Child Benefit Technical Manual
Child Benefit & Guardian’s Allowance (Administration) Regulations 2003, regulation 15
A claim is treated as made for, and awarded for, an indefinite period unless it would be inappropriate to do so, such as where a relevant change of circumstances is expected in the near future. In this event, the claim will be treated as made for a definite period appropriate to the circumstances, and the award will be made for that period.