PAYE104005 | Individual records: merge individual records: automated merge processing

From HM Revenue & Customs · PAYE Manual

Automated merge consists of three processes

PAYE104010Pre automated merge
PAYE104015Automated merge
PAYE104020Post automated merge

Automated merge processing will not require your input or involvement. This part of the guidance informs you of the system process that takes place prior to the creation of work items on automated merge failure and gives you an insight into what happens when a NINO / TRN are automatically merged.