In software maintenance, "Patch 1" (often abbreviated P1) is the first cumulative hotfix released after a major version goes live. It is historically significant because:

. This "Patch 1" update specifically addresses critical security vulnerabilities and stability issues present in the initial RU10 release. Broadcom support portal Exclusive Security Fixes

SAP Business One for Russia (Localization package RU10) had a notorious "Patch 1 Exclusive" for (build number 143 coincidentally aligns with SAP’s internal patch sequence for Service Pack 1, Patch Level 1). This patch exclusively addressed:

: Improved how new definitions are applied when a scan is already in progress (CRE-22134).