RM532 | Processing a claim:
From HM Revenue & Customs · Repayment Claims Manual
When a new claimant writes or calls or when an RA receives a claim and asks whether to set the claimant up in your District
get enough information to decide whether the case is yours (RM1230 onwards)
consider whether there is any indication that the case might be sensitive
if the case is to be set up in your District
or
decide whether it is a D or CT case
decide which claim form to issue (RM1262)
if the taxpayer is a minor, check TI to see whether you can find the parent or guardian’s GCD
tell the RA to send the claim or enquiry to the correct District or section
provide the details the RA needs to set the case up.