SAP Message WAHD403 - Internal error occurred when displaying the AHD (see long text).

Diagnosis
The use of alternativehistorical data (AHD) for theforecast is active formaterial &SYST-MSGV1& and plant &SYST-MSGV2&. An internal erroroccurred when displaying the alternative historical data (AHD):
Syst-msgv3 (syst-msgtysyst-msgidsyst-msgno)

Procedure
INCLUDE ISR_BERECHTIGUNG