This document provides steps to resolve the error "Errors while Sending Packages from OLTP to BI" that can occur when using process chains for daily data loads from an OLTP system to a SAP BW/BI system. The error is caused when IDocs are stuck in the ALE outbox and do not arrive in the ALE inbox of the BW/BI system. The steps include checking the TRFC log, monitoring jobs and processes, and manually executing any stuck LUWs in the TRFC.