Here we would like to draw your attention to PHCPRELS transaction code in SAP. As we know it is being used in the SAP PA-CP (Personnel Cost Planning and Simulation in PA) component which is coming under HR (HCM) PA module (Personnel Management). PHCPRELS is a transaction code used for Release plan in SAP.
It comes under the package for HCP Planning (PAOC_HCP_PLAN). When we execute this transaction code, RHHCP_PLAN_CODOC_CREATE is the normal standard SAP program that is being executed in background. Transaction code PHCPRELS is included in the SAP component for EA-HR.
Transaction PHCPRELS technical data table