SAP Message WAHD605 - AHD not active. Data will be shown in display mode.

Diagnosis
Alternative historical data (AHD) is not currently active for the selected combination ofarticle andplant. The system candisplay any existing alternative historical data (AHD), but you cannotchange it.
To change the standard consumption values, you can use the pushbutton"Change article master data" to go to transaction MM42 (logisticsview).