SAP Message RSM2019 - No job termination in the source system => read source system outbox

Diagnosis The background job in the source system was not terminated. In this caseit is probable that the tRFC to or from the source system is incorrect.To check this, the ALE outbox of the source system must be checked andcompared with the BI ALE inbox. Procedure You can check the outbox of the source system using the wizard or usingthe monitor. Monitor 2.0: Switch to the "Detail" tab page and expand the "transfer" node. Select aleaf to see detailed information. Monitor 1.2: Switch to the folder "All IDocs". Select the "IDocs in the sourcesystem" and "IDocs in the Warehouse" checkboxes and choose "Refresh".