No.
The relevant FAO agency must advise the applicant (1.1.A.72):
Make whatever changes may be required to the existing assessment of their current entitlement.
An electronic or paper file record of this advice should be kept.
Policy reference: FA Guide 4.2.2.20 Specific Requirements for Past Period Claim, 4.2.2.40 Specific Requirements for FTB Instalment Claims
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Last reviewed: 1 December 2008