https://userapps.support.sap.com/sap/support/knowledge/en/2970280
2970280 - Impossible to delete task list in MOD task list | SAP Knowledge Base Article
Impossible to delete task list in MOD tab in /AXONX/MBX Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to...
delete task