Solution : https://service.sap.com/sap/support/notes/448321 (SAP Service marketplace login required)
Key words :
additional key words milestone functions, system displays error ru510, causing unwanted effects, milestone functions, system status, milestone function, cats transfer, network confirmations, wbs elements, dialog mode
Related Notes :
648292 | RU510 w/ confirmation for operation w/o milestone function |
555947 | PS/PM: Confirmation by CATS (Consulting note) |
445543 | CNMASS: Dialog boxes and information messages in mass change |
155966 | Dialog box f.transfng actual dates milestones in BI |