https://userapps.support.sap.com/sap/support/knowledge/en/3746554
3746554 - Cannot reject queues in EWM Monitor | SAP Knowledge Base Article
Cannot reject queues in /N/SCWM/MON (EWM Monitor). Error message: Action 'Reject' is not allowed for any of the selected entries Message no. /SCWM/MONITOR149
sap knowledgecannotrejectqueues