TCM0288540 - Tax Credits Manual - HMRC internal manual
issue a TC603D2 if the claim covers PY and PY-1 issue a TC603D if the claim covers PY only issue a TC603R in all cases update Household Notes with the message SU04 from TCM0172080. For how to do this, use TCM1000001 take no further action If it is System Terminated and the EU Member State has not confirmed the composition of the family on the e-form or SED, and / or there are changes of circumstances, contact your TALLO for advice on what to do. If it is terminated for any other reason, contact your TALLO for advice on what to do.
Source: gov.uk